CVE-2026-10561: Langflow Unsandboxed PythonREPLComponent Execution

# CVE-2026-10561: Langflow Unsandboxed PythonREPLComponent Execution

https://gcdradar.vercel.app/incidents/cve-2026-10561-langflow-unsandboxed-pythonreplcomponent-exec · AIR-2026-0247 · closed 2026-06-22

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-06-22 (happened 2026-10-06)
- AI role: Attack on AI
- Products: Langflow
- CVE ids: CVE-2026-10561
- CVSS: 9.9

## Summary

Langflow built-in Python interpreter components executed arbitrary code without sandboxing in-process with service privileges. Authenticated users could achieve remote code execution and escalate to superuser status.

## What to do

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

## Latest updates

- 2026-10-06: CVE-2026-10561: Langflow: PythonREPLComponent executes unsandboxed Python code, enabling authenticated RCE and privilege escalation (https://github.com/advisories/GHSA-8qpj-27x8-pwpq)
- 2026-06-22: CVE-2026-10561: IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an… (https://nvd.nist.gov/vuln/detail/CVE-2026-10561)

## Sources

- 2026-06-22 NVD: CVE-2026-10561: IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an… https://nvd.nist.gov/vuln/detail/CVE-2026-10561
- 2026-10-06 GitHub Advisory Database: CVE-2026-10561: Langflow: PythonREPLComponent executes unsandboxed Python code, enabling authenticated RCE and privilege escalation https://github.com/advisories/GHSA-8qpj-27x8-pwpq

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