CVE-2026-81211: Langflow

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary Python code due to improper authorization of custom components in stored flows.

Affected products

• Langflow Langflow: from 1.0.0, before 1.11.6 (fixed in 1.11.6)

Published 2026-09-10. Last modified 2026-09-16.