CVE-2026-21445: Langflow Missing Authentication on Critical API Endpoints

# CVE-2026-21445: Langflow Missing Authentication on Critical API Endpoints

https://gcdradar.vercel.app/incidents/cve-2026-21445-langflow-missing-authentication-on-critical-a · AIR-2026-0424 · closed 2026-01-02

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-01-02
- AI role: Attack on AI
- Products: Langflow
- CVE ids: CVE-2026-21445
- CVSS: 8.8

## Summary

Multiple API endpoints in Langflow lack authentication controls, allowing unauthenticated users to access sensitive conversation data and execute destructive operations. No active exploitation has been confirmed.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-01-02: CVE-2026-21445: Langflow is a tool for building and deploying AI-powered agents and workflows. (https://nvd.nist.gov/vuln/detail/CVE-2026-21445)
- 2026-01-02: CVE-2026-21445: Langflow Missing Authentication on Critical API Endpoints (https://github.com/advisories/GHSA-c5cp-vx83-jhqx)

## Sources

- 2026-01-02 GitHub Advisory Database: CVE-2026-21445: Langflow Missing Authentication on Critical API Endpoints https://github.com/advisories/GHSA-c5cp-vx83-jhqx
- 2026-01-02 NVD: CVE-2026-21445: Langflow is a tool for building and deploying AI-powered agents and workflows. https://nvd.nist.gov/vuln/detail/CVE-2026-21445

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.