Langflow - Broken Access Control
CVE-2026-21445
Verified
Description
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.
Severity
Critical
CVSS Score
9.1
Exploit Probability
33%
Affected Product
langflow
Published Date
March 25, 2026
Template Author
dhiyaneshdk
CVE-2026-21445.yaml
9.1Score
CVSS Metrics
CVSS Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVE ID:
cve-2026-21445
CWE ID:
cwe-306
Remediation Steps
Update to version 1.7.0.dev45 or later.