CVE-2026-21445
January 02, 2026
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.0.dev45, multiple critical API endpoints in Langflow are missing authentication controls. The issue allows any unauthenticated user to access sensitive user conversation data, transaction histories, and perform destructive operations including message deletion. This affects endpoints handling personal data and system operations that should require proper authorization. Version 1.7.0.dev45 contains a patch.
Affected Packages
https://github.com/langflow-ai/langflow.git (GITHUB):
Affected version(s) >=v1.7.0.dev0 <v1.7.0.dev45Fix Suggestion:
Update to version v1.7.0.dev45langflow-base (PYTHON):
Affected version(s) >=0.0.1 <0.7.1Fix Suggestion:
Update to version 0.7.1langflow (PYTHON):
Affected version(s) >=0.0.31 <1.7.1Fix Suggestion:
Update to version 1.7.1Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
POC
CVSS v3
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Missing Authentication for Critical Function
EPSS
Base Score:
0.07
