Langflow <=1.2.x - Unauthenticated Remote Code Execution via validate_code

Langflow = 1.2.x exposes POST /api/v1/validate/code without any authentication. The endpoint calls validatecode which execs user-supplied Python code. Default-argument expressions in Python execute at function-definition time, allowing arbitrary OS command execution without authentication. id:...

CVE-2026-0770-PoC

CVE-2026-0770 - Langflow Remote Code Execution Summary Langflow contains a critical remote code execution vulnerability in the validatecode function located in src/lfx/src/lfx/custom/validate.py. The function uses exec to execute user-supplied Python code without sandboxing, allowing arbitrary...

CVE-2025-3248

CVE-2025-3248 Remote Code Execution using vulnerable API endpoint Proof of Concept. Info: ⚠️ Use this at your own risk! ❓ Added option to reverse shell. ✅ Auto retry if validatecode is off. Showcase Usage root@kitploit: python CVE-2025-3248.py / python3 CVE-2025-3248.py Footprint root@kitploit: By...

Langflow auto_login + validate/code Chain Unauthenticated RCE (CVE-2026-9198) (Direct Check)

Binary data langflowautologinvalidatecodercecve20269198.nbin...

PYSEC-2026-1525 Langflow affected by Remote Code Execution via validate_code() exec()

Langflow execglobals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability. The specific...

GHSA-G22F-V6F7-2HRH Langflow affected by Remote Code Execution via validate_code() exec()

Langflow execglobals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability. The specific...