CVE-2026-85025: Langflow

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

IBM Langflow OSS 1.0.0 through 1.11.5 Langflow could allow an unauthenticated attacker to execute arbitrary code and access or modify chat sessions through publicly shared MCP project endpoints due to improper enforcement of public-flow security restrictions and session isolation controls.

Affected products

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

Published 2026-09-10. Last modified 2026-09-15.