CVE-2026-33873: Langflow Authenticated Code Execution in Agentic Assistant

# CVE-2026-33873: Langflow Authenticated Code Execution in Agentic Assistant

https://gcdradar.vercel.app/incidents/cve-2026-33873-langflow-authenticated-code-execution-in-agen · AIR-2026-0518 · closed 2026-03-26

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-03-26
- AI role: Attack on AI
- Products: Langflow
- CVE ids: CVE-2026-33873
- CVSS: 9.3

## Summary

Langflow suffers from an authenticated code execution vulnerability in its Agentic Assistant validation phase. The flaw allows dynamic server-side execution of LLM-generated Python code.

## What to do

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

## Latest updates

- 2026-03-27: CVE-2026-33873: Langflow is a tool for building and deploying AI-powered agents and workflows. (https://nvd.nist.gov/vuln/detail/CVE-2026-33873)
- 2026-03-26: CVE-2026-33873: Langflow has Authenticated Code Execution in Agentic Assistant Validation (https://github.com/advisories/GHSA-v8hw-mh8c-jxfc)

## Sources

- 2026-03-26 GitHub Advisory Database: CVE-2026-33873: Langflow has Authenticated Code Execution in Agentic Assistant Validation https://github.com/advisories/GHSA-v8hw-mh8c-jxfc
- 2026-03-27 NVD: CVE-2026-33873: Langflow is a tool for building and deploying AI-powered agents and workflows. https://nvd.nist.gov/vuln/detail/CVE-2026-33873

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