CVE-2026-34046: Langflow IDOR Allows Unauthorized Flow Access

# CVE-2026-34046: Langflow IDOR Allows Unauthorized Flow Access

https://gcdradar.vercel.app/incidents/cve-2026-34046-langflow-idor-allows-unauthorized-flow-access · AIR-2026-0525 · closed 2026-03-27

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-03-27
- AI role: Attack on AI
- Products: Langflow
- CVE ids: CVE-2026-34046
- CVSS: 8.7

## Summary

An insecure direct object reference vulnerability in Langflow allowed authenticated users to read, modify, or delete flows and expose embedded API keys. A patch has been released to enforce proper ownership checks.

## What to do

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

## Latest updates

- 2026-03-27: CVE-2026-34046: Langflow is a tool for building and deploying AI-powered agents and workflows. (https://nvd.nist.gov/vuln/detail/CVE-2026-34046)
- 2026-03-27: CVE-2026-34046: Langflow: Authenticated Users Can Read, Modify, and Delete Any Flow via Missing Ownership Check (https://github.com/advisories/GHSA-8c4j-f57c-35cf)

## Sources

- 2026-03-27 GitHub Advisory Database: CVE-2026-34046: Langflow: Authenticated Users Can Read, Modify, and Delete Any Flow via Missing Ownership Check https://github.com/advisories/GHSA-8c4j-f57c-35cf
- 2026-03-27 NVD: CVE-2026-34046: Langflow is a tool for building and deploying AI-powered agents and workflows. https://nvd.nist.gov/vuln/detail/CVE-2026-34046

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