CVE-2026-19875: Langflow

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to overwrite administrator email information and abuse the server as an outbound relay due to missing authentication for the registration endpoint.

Affected products

• Langflow Langflow: from 1.0.0, before 1.10.1 (fixed in 1.10.1)

Published 2026-08-19. Last modified 2026-08-26.