CVE-2026-19297: Langflow

Critical severity, CVSS 9.1. EPSS: 0.6% chance of exploitation in the next 30 days.

IBM Langflow OSS 1.0.0 through 1.9.6 could allow a remote attacker to obtain unauthorized access to user accounts due to improper restriction of excessive authentication attempts.

Affected products

• Langflow Langflow: from 1.0.0, before 1.10.0 (fixed in 1.10.0)

Published 2026-08-13. Last modified 2026-08-26.