CVE-2026-13435: Langflow

Critical severity, CVSS 9.9. EPSS: 0.5% chance of exploitation in the next 30 days.

IBM Langflow OSS 1.0.0 through 1.10.1 contains an improper input validation vulnerability in the PythonREPL sandbox implementation.

Affected products

• Langflow Langflow: from 1.0.0, before 1.10.2 (fixed in 1.10.2)

Published 2026-07-30. Last modified 2026-08-04.