{"id":"CVE-2026-51886","title":"langflow-ai langflow v1.9.3 is affected by: Code Injection","summary":"langflow-ai langflow v1.9.3 is affected by: Code Injection. The impact is: execute arbitrary code (remote). The component is: src/backend/base/langflow/api/v1/validate.py:validate-post_validate_code-a-real-authenticated-http-post-to-api-…","severity":"none","published":"2026-10-01","updated":"2026-10-01","sourceUpdated":"2026-10-01T22:17:03.387","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-51886","references":[{"url":"https://gist.github.com/Ro1ME/c11b1e63e4e8fca6b25275144f25ec2a","label":"cve@mitre.org"},{"url":"https://github.com/langflow-ai/langflow/issues/13336","label":"cve@mitre.org"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-01T23:03:32.776Z","slug":"CVE-2026-51886","body":"## Overview\n\nlangflow-ai langflow v1.9.3 is affected by: Code Injection. The impact is: execute arbitrary code (remote). The component is: src/backend/base/langflow/api/v1/validate.py:validate-post_validate_code-a-real-authenticated-http-post-to-api-v1. The attack vector is: Attack surface: HTTP or browser-backed service path. A public-facing route accepts raw Python source and forwards it into a server-side compile/exec validation path without any visible entitlement guard. ¶¶ A weakness has been identified in langflow-ai langflow up to 1.9.3. langflow contains a code injection vulnerability in validate-post_validate_code-a-real-authenticated-http-post-to-api-v1 (src/backend/base/langflow/api/v1/validate.py:13). An authenticated attacker can execute arbitrary Python code on the server by submitting malicious code to the /api/v1/validate/code endpoint, which directly executes user-supplied code without sandboxing or security controls.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}