CVE-2026-21445: Langflow Missing Authentication on Critical API Endpoints
(updated )
Multiple critical API endpoints in Langflow are missing authentication controls, allowing 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.
References
- github.com/advisories/GHSA-c5cp-vx83-jhqx
- github.com/langflow-ai/langflow
- github.com/langflow-ai/langflow/commit/3fed9fe1b5658f2c8656dbd73508e113a96e486a
- github.com/langflow-ai/langflow/releases/tag/1.7.1
- github.com/langflow-ai/langflow/security/advisories/GHSA-c5cp-vx83-jhqx
- nvd.nist.gov/vuln/detail/CVE-2026-21445
Code Behaviors & Features
Detect and mitigate CVE-2026-21445 with GitLab Dependency Scanning
Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →