CVE-2026-10561: Langflow

Critical severity, CVSS 10.0. EPSS: 0.8% chance of exploitation in the next 30 days.

IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an authentication bypass that allows an unauthenticated attacker to execute arbitrary code on the host system, resulting in complete compromise

Affected products

• Langflow Langflow: from 1.0.0, up to and including 1.9.3

Published 2026-06-22. Last modified 2026-06-26.