{"id":41719,"date":"2026-07-21T11:20:35","date_gmt":"2026-07-21T11:20:35","guid":{"rendered":"https:\/\/fidelissecurity.com\/?post_type=vulnerabilities&#038;p=41719"},"modified":"2026-07-25T16:53:53","modified_gmt":"2026-07-25T16:53:53","slug":"cve-2025-3248","status":"publish","type":"vulnerabilities","link":"https:\/\/fidelissecurity.com\/es\/vulnerabilities\/cve-2025-3248\/","title":{"rendered":"CVE-2025-3248"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"41719\" class=\"elementor elementor-41719\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\" data-elementor-post-type=\"vulnerabilities\">\n\t\t\t\t<div class=\"elementor-element elementor-element-10f184a e-ecs-flex e-flex e-con-boxed e-con e-parent\" data-id=\"10f184a\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ecs_container_type&quot;:&quot;flex&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0e2ebbc elementor-widget elementor-widget-heading\" data-id=\"0e2ebbc\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"summary\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Summary<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0352243 elementor-widget elementor-widget-text-editor\" data-id=\"0352243\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span class=\"NormalTextRun SCXW170867894 BCX8\">A serious code injection flaw that affects\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW170867894 BCX8\">Langflow<\/span><span class=\"NormalTextRun SCXW170867894 BCX8\">\u00a0versions prior to 1.3.0 is CVE-2025-3248. Through the \/<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW170867894 BCX8\">api<\/span><span class=\"NormalTextRun SCXW170867894 BCX8\">\/v1\/<\/span><span class=\"NormalTextRun SCXW170867894 BCX8\">validate<\/span><span class=\"NormalTextRun SCXW170867894 BCX8\">\/code endpoint, it enables unauthenticated attackers to run any Python code. The vulnerability has been a<\/span><span class=\"NormalTextRun SCXW170867894 BCX8\">ctively<\/span><span class=\"NormalTextRun SCXW170867894 BCX8\">\u00a0used as the first access vector in the JADEPUFFER ransomware campaign and to spread malware. By requiring authentication for the vulnerable endpoint,\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW170867894 BCX8\">Langflow<\/span><span class=\"NormalTextRun SCXW170867894 BCX8\">\u00a01.3.0 resolves the problem<\/span><span class=\"NormalTextRun SCXW170867894 BCX8\">.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0b3f860 elementor-widget elementor-widget-heading\" data-id=\"0b3f860\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"actions-required\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Urgent Actions Required<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e58d2d elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"8e58d2d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check-square\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Upgrade Langflow to version 1.3.0 or later. <\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check-square\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Restrict or disable external access to the \/api\/v1\/validate\/code endpoint if immediate patching is not possible.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check-square\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Monitor logs and network activity for suspicious requests targeting the vulnerable endpoint and investigate indicators of compromise.  <\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-check-square\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Do not expose Langflow to the internet and follow vendor security guidance. <\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e6059c5 elementor-widget elementor-widget-heading\" data-id=\"e6059c5\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"vulnerable-systems\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Which Systems Are Vulnerable to\u202fCVE-2025-3248?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-91f5818 elementor-widget elementor-widget-heading\" data-id=\"91f5818\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Technical Overview\u202f<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d261fe2 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"d261fe2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Vulnerability Type:<\/b> Code Injection Leading to Remote Code Execution (RCE) Due to Missing Authentication<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Affected Software\/Versions:<\/b> <ul> <li>Langflow versions prior to 1.3.0<\/li><\/ul><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>CVSS Vector:\u202fv3.1<\/b> <ul> <li>Attack Vector: Network<\/li> <li>Attack Complexity: Low<\/li> <li>Privileges Required: None <\/li> <li>User Interaction: None <\/li> <li>Scope: Unchanged<\/li> <li>Confidentiality Impact: High<\/li> <li>Integrity Impact: High<\/li> <li>Availability Impact: High<\/li><\/ul><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Patch Availability:<\/b>\u202fYes, available\u202f<ol> <li><a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2025-3248\" target=\"_blank\" rel=\"noopener nofollow noreferrer\">NVD - CVE-2025-3248<\/a><\/li> <li><a href=\"https:\/\/github.com\/langflow-ai\/langflow\/pull\/6911\" target=\"_blank\" rel=\"noopener nofollow noreferrer\">fix: auth current user on code validation by jordanrfrazier \u00b7 Pull Request #6911 \u00b7 langflow-ai\/langflow \u00b7 GitHub<\/a><\/li> <li><a href=\"https:\/\/github.com\/langflow-ai\/langflow\/releases\/tag\/1.3.0\" target=\"_blank\" rel=\"noopener nofollow noreferrer\">Release 1.3.0 \u00b7 langflow-ai\/langflow \u00b7 GitHub<\/a><\/li><\/ol><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-759b53d elementor-widget elementor-widget-heading\" data-id=\"759b53d\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"exploitation-path\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How Does the\u202fCVE-2025-3248 Exploit Work?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0e9e9cb elementor-widget elementor-widget-text-editor\" data-id=\"0e9e9cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span class=\"TextRun SCXW89133380 BCX8\" lang=\"EN-IN\" xml:lang=\"EN-IN\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW89133380 BCX8\">The attack typically follows these steps:<\/span><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2b05bab elementor-widget elementor-widget-image\" data-id=\"2b05bab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"2264\" height=\"2560\" src=\"https:\/\/fidelissecurity.com\/wp-content\/uploads\/2026\/07\/CVE-2025-3248-scaled.webp\" class=\"attachment-full size-full wp-image-41752\" alt=\"CVE-2025-3248\" srcset=\"https:\/\/fidelissecurity.com\/wp-content\/uploads\/2026\/07\/CVE-2025-3248-scaled.webp 2264w, https:\/\/fidelissecurity.com\/wp-content\/uploads\/2026\/07\/CVE-2025-3248-265x300.webp 265w, https:\/\/fidelissecurity.com\/wp-content\/uploads\/2026\/07\/CVE-2025-3248-906x1024.webp 906w, https:\/\/fidelissecurity.com\/wp-content\/uploads\/2026\/07\/CVE-2025-3248-768x868.webp 768w, https:\/\/fidelissecurity.com\/wp-content\/uploads\/2026\/07\/CVE-2025-3248-1359x1536.webp 1359w, https:\/\/fidelissecurity.com\/wp-content\/uploads\/2026\/07\/CVE-2025-3248-1811x2048.webp 1811w\" sizes=\"(max-width: 2264px) 100vw, 2264px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a93a1eb elementor-widget elementor-widget-heading\" data-id=\"a93a1eb\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"root-cause\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What Causes\u202fCVE-2025-3248?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7275c12 elementor-widget elementor-widget-text-editor\" data-id=\"7275c12\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Vulnerability Root Cause:\u202f\u202f<\/strong>\u202f<\/p><p>The lack of authentication in Langflow&#8217;s \/api\/v1\/validate\/code endpoint is the root cause of CVE-2025-3248. Affected versions allow arbitrary Python code to run on the server and cause unauthenticated remote code execution because the endpoint accepts crafted HTTP requests without confirming the identity of the requester.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-496d048 e-ecs-flex e-flex e-con-boxed e-con e-parent\" data-id=\"496d048\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ecs_container_type&quot;:&quot;flex&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e1e32da elementor-widget elementor-widget-heading\" data-id=\"e1e32da\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"mitigation\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How Can You Mitigate\u202fCVE-2025-3248?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4f81845 elementor-widget elementor-widget-text-editor\" data-id=\"4f81845\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>If immediate patching is delayed or not possible:\u202f<\/p><ul><li>Restrict access to the \/api\/v1\/validate\/code endpoint using firewall rules or an API gateway.<\/li><li>Disable or limit public access to vulnerable Langflow instances whenever possible.<\/li><li>Monitor logs and network traffic for suspicious requests targeting the \/api\/v1\/validate\/code endpoint.<\/li><li>Watch for indicators of compromise and investigate unusual code execution or outbound connections.<\/li><li>Follow the vendor&#8217;s security recommendations until the update to Langflow 1.3.0 can be applied.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-048e63e elementor-widget elementor-widget-heading\" data-id=\"048e63e\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"asset-and-systems-risk\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Which Assets and Systems Are at Risk?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a622920 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"a622920\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Asset Types Affected:<\/b> <ul> <li>Langflow Deployments - Running versions prior to 1.3.0<\/li> <li>AI Application Servers - Systems hosting Langflow for AI application and agent workflows<\/li> <li>Internet-Facing Langflow Instances - Especially those exposing the \/api\/v1\/validate\/code endpoint<\/li> <\/ul><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Business-Critical Systems at Risk:<\/b> <ul> <li>AI Infrastructure - Langflow servers that store AI provider API keys and application data<\/li> <li>Cloud-Connected Environments - Deployments where Langflow has access to cloud credentials or secrets<\/li> <li>Deployments with Connected Databases or Configuration Services - If a compromised Langflow instance can access these resources, they may also be exposed<\/li> <\/ul><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Exposure Level:<\/b> <ul> <li>Internet-Accessible Langflow Instances - Particularly those exposing the vulnerable code validation endpoint<\/li> <li>Unpatched Langflow Servers - Versions earlier than 1.3.0 remain susceptible to unauthenticated remote code execution<\/li> <\/ul><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ebd4fd9 elementor-widget elementor-widget-heading\" data-id=\"ebd4fd9\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"patching\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Will Patching\u202fCVE-2025-3248 Cause Downtime?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d3ff488 elementor-widget elementor-widget-text-editor\" data-id=\"d3ff488\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Patch application impact:<\/strong>\u202fLow. Updating to Langflow 1.3.0 typically involves a standard software upgrade with minimal expected downtime.\u202f<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16d5fc0 elementor-widget elementor-widget-heading\" data-id=\"16d5fc0\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"detection\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How Can You Detect\u202fCVE-2025-3248 Exploitation?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3af05b1 elementor-widget elementor-widget-heading\" data-id=\"3af05b1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Exploitation Signatures:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a539b10 elementor-widget elementor-widget-text-editor\" data-id=\"a539b10\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Monitor for crafted HTTP POST requests targeting the \/api\/v1\/validate\/code endpoint, especially those attempting to submit Python code for validation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d388fac elementor-widget elementor-widget-heading\" data-id=\"d388fac\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">MITRE ATT&amp;CK Mapping:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e1d4b8b elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"e1d4b8b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">T1190 - Exploit Public-Facing Application<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13c5a30 elementor-widget elementor-widget-heading\" data-id=\"13c5a30\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Indicators of Compromise (IOCs\/IOAs):\u202f<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4912b8f elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"4912b8f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Requests targeting the \/api\/v1\/validate\/code endpoint<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Unusual processes spawned by the code validation service <\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Unexpected outbound network connections<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Suspicious log entries related to the \/api\/v1\/validate\/code endpoint<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-221fc5e elementor-widget elementor-widget-heading\" data-id=\"221fc5e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Behavioral\u202fIndicators:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f737893 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"f737893\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Unauthorized Python code execution through the code validation endpoint<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Unexpected code execution activity on the Langflow server<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9a751ff elementor-widget elementor-widget-heading\" data-id=\"9a751ff\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Alerting Strategy:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2280585 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"2280585\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Priority: Critical\u202f<\/b><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Trigger alerts for:<\/b> <ul> <li>Requests to the \/api\/v1\/validate\/code endpoint<\/li> <li>Unusual Python code execution on Langflow servers<\/li> <li>Unexpected outbound network connections<\/li> <\/ul><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1ccf3cc elementor-widget elementor-widget-heading\" data-id=\"1ccf3cc\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"remediation-response\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Remediation &amp; Response<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-839aa54 elementor-widget-laptop__width-initial elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"839aa54\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-long-arrow-alt-right\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Incident Response Considerations:<\/b> <ul> <li>Monitor logs for suspicious requests targeting the \/api\/v1\/validate\/code endpoint.<\/li> <li>Investigate unusual code execution or outbound network connections from affected Langflow servers.<\/li> <li>Monitor for published indicators of compromise and apply the vendor-recommended update.<\/li> <\/ul><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9cf1f94 content-align-cta-default elementor-widget elementor-widget-eael-cta-box\" data-id=\"9cf1f94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"eael-cta-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"eael-call-to-action cta-basic bg-lite cta-preset-1\">\n        <h4 class=\"title eael-cta-heading\"><span class=\"eael-cta-title-text elementor-repeater-item-ba8b47d\">Strengthen Network Security<\/span> <span class=\"eael-cta-title-text elementor-repeater-item-581abbc\">Across<\/span> <span class=\"eael-cta-title-text elementor-repeater-item-e8718a5\">Hybrid Environments<\/span> <\/h4><ul style=\"color: #ffffff\">\n \t<li style=\"list-style-type: none\">\n<ul style=\"color: #ffffff\">\n \t<li style=\"list-style-type: none\">\n<ul style=\"color: #ffffff\">\n \t<li>Learn how Fidelis NDR detects threats before they cause damage<\/li>\n \t<li>Gain complete visibility across users, endpoints, and network traffic<\/li>\n \t<li>Reduce alert fatigue with intelligent threat detection and response<\/li>\n<li>Discover proven strategies for proactive network defense<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul><a href=\"https:\/\/fidelissecurity.com\/resource\/solution-brief\/network-solution-brief\/\" class=\"cta-button cta-preset-1  \">Download the Solution Brief <\/a>\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6753ae5c e-ecs-flex e-flex e-con-boxed e-con e-parent\" data-id=\"6753ae5c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ecs_container_type&quot;:&quot;flex&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9cc6dc7 elementor-widget elementor-widget-heading\" data-id=\"9cc6dc7\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"cvss-breakdown-table\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">CVSS Breakdown Table\u202f<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-76c57f0 elementor-widget elementor-widget-Table\" data-id=\"76c57f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"Table.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<table class=\"tafe-table \">\n\t\t\t<thead  class=\"tafe-table-header\">\n\t\t\t\t<tr>\n\t\t\t\t\t<th class=\"elementor-inline-editing elementor-repeater-item-58d4a4b\"   >Metric<\/th><th class=\"elementor-inline-editing elementor-repeater-item-5df925d\"   >Value\u202f<\/th><th class=\"elementor-inline-editing elementor-repeater-item-1a6f993\"   >Description<\/th>\t\t\t\t<\/tr>\n\t\t\t<\/thead>\n\t\t\t\t\t\t<tbody class=\"tafe-table-body\">\n\t\t\t\t<tr>\n\t\t\t\t\t<td data-label=\"Metric\"   class=\"elementor-repeater-item-480a869 td-content-type-default\" >Base Score<\/td><td data-label=\"Value\u202f\"   class=\"elementor-repeater-item-ff1827d td-content-type-default\" >9.8<\/td><td data-label=\"Description\"   class=\"elementor-repeater-item-5024640 td-content-type-default\" >Critical severity with a high potential for remote exploitation <\/td><\/tr><tr><td data-label=\"Metric\"   class=\"elementor-repeater-item-1ddd412 td-content-type-default\" >Attack Vector<\/td><td data-label=\"Value\u202f\"   class=\"elementor-repeater-item-bbd7e7e td-content-type-default\" >Network<\/td><td data-label=\"Description\"   class=\"elementor-repeater-item-4a0a1fd td-content-type-default\" >Can be exploited remotely over a network <\/td><\/tr><tr><td data-label=\"Metric\"   class=\"elementor-repeater-item-6c597f3 td-content-type-default\" >Attack Complexity<\/td><td data-label=\"Value\u202f\"   class=\"elementor-repeater-item-ed0abd9 td-content-type-default\" >Low<\/td><td data-label=\"Description\"   class=\"elementor-repeater-item-7a9fabf td-content-type-default\" >Does not require special conditions to exploit <\/td><\/tr><tr><td data-label=\"Metric\"   class=\"elementor-repeater-item-91f8a20 td-content-type-default\" >Privileges Required<\/td><td data-label=\"Value\u202f\"   class=\"elementor-repeater-item-5531257 td-content-type-default\" >None<\/td><td data-label=\"Description\"   class=\"elementor-repeater-item-7e3c677 td-content-type-default\" >No authentication or privileges are needed <\/td><\/tr><tr><td data-label=\"Metric\"   class=\"elementor-repeater-item-2a08640 td-content-type-default\" >User Interaction <\/td><td data-label=\"Value\u202f\"   class=\"elementor-repeater-item-ba738dd td-content-type-default\" >None<\/td><td data-label=\"Description\"   class=\"elementor-repeater-item-86ba742 td-content-type-default\" >No user action is required for exploitation <\/td><\/tr><tr><td data-label=\"Metric\"   class=\"elementor-repeater-item-83d4b57 td-content-type-default\" >Scope <\/td><td data-label=\"Value\u202f\"   class=\"elementor-repeater-item-a033634 td-content-type-default\" >Unchanged <\/td><td data-label=\"Description\"   class=\"elementor-repeater-item-2f5ca21 td-content-type-default\" >The impact remains within the vulnerable Langflow component <\/td><\/tr><tr><td data-label=\"Metric\"   class=\"elementor-repeater-item-9e69ec2 td-content-type-default\" >Confidentiality Impact <\/td><td data-label=\"Value\u202f\"   class=\"elementor-repeater-item-60a205a td-content-type-default\" >High<\/td><td data-label=\"Description\"   class=\"elementor-repeater-item-b6f0509 td-content-type-default\" >May allow unauthorized access to sensitive information <\/td><\/tr><tr><td data-label=\"Metric\"   class=\"elementor-repeater-item-9f056c9 td-content-type-default\" >Integrity Impact <\/td><td data-label=\"Value\u202f\"   class=\"elementor-repeater-item-1a6b266 td-content-type-default\" >High<\/td><td data-label=\"Description\"   class=\"elementor-repeater-item-4e63a19 td-content-type-default\" >May enable unauthorized execution or modification of code <\/td><\/tr><tr><td data-label=\"Metric\"   class=\"elementor-repeater-item-d664870 td-content-type-default\" >Availability Impact<\/td><td data-label=\"Value\u202f\"   class=\"elementor-repeater-item-bfc0d04 td-content-type-default\" >High<\/td><td data-label=\"Description\"   class=\"elementor-repeater-item-6066841 td-content-type-default\" >May disrupt the availability of the affected system through arbitrary code execution <\/td>\t\t\t\t<\/tr>\n\t\t\t<\/tbody>\n\t\t<\/table>\n\t\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-29f0fef e-ecs-flex e-flex e-con-boxed e-con e-parent\" data-id=\"29f0fef\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ecs_container_type&quot;:&quot;flex&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fd79500 elementor-widget elementor-widget-heading\" data-id=\"fd79500\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"resources\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">References:<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3bdf004 elementor-widget elementor-widget-text-editor\" data-id=\"3bdf004\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol>\n \t<li><a href=\"https:\/\/www.cve.org\/CVERecord?id=CVE-2025-3248\" target=\"_blank\" rel=\"noopener nofollow noreferrer\">CVE Record: CVE-2025-3248<\/a><\/li>\n \t<li><a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2025-3248\" target=\"_blank\" rel=\"noopener nofollow noreferrer\">NVD &#8211; CVE-2025-3248<\/a><\/li>\n<li><a href=\"https:\/\/www.cisa.gov\/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248\" target=\"_blank\" rel=\"noopener nofollow noreferrer\">https:\/\/www.cisa.gov\/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248<\/a><\/li>\n<\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>CVE-2025-3248 is a critical Langflow vulnerability that enables unauthenticated remote code execution in versions before 1.3.0.<\/p>\n","protected":false},"featured_media":41752,"template":"","severity":[1483],"vuln_year":[1524],"class_list":["post-41719","vulnerabilities","type-vulnerabilities","status-publish","has-post-thumbnail","hentry","severity-critical","vuln_year-1524"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>CVE-2025-3248: Langflow Unauthenticated RCE | Fidelis Security<\/title>\n<meta name=\"description\" content=\"CVE-2025-3248 is a critical Langflow vulnerability that enables unauthenticated remote code 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