CVE-2026-81268: Langflow

High severity, CVSS 8.1. EPSS: 0.4% 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 flows and obtain sensitive information due to insufficient session expiration of API keys after user deactivation.

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.