CVE-2026-10560: Langflow

Critical severity, CVSS 9.1. EPSS: 0.5% chance of exploitation in the next 30 days.

IBM Langflow OSS 1.0.0 through 1.9.6 contains a missing authentication vulnerability in /api/v1/build_public_tmp/ endpoints that allows an unauthenticated attacker to read build event data or cancel jobs using a valid job identifier, resulting in information disclosure and denial of service.

Affected products

• Langflow Langflow: from 1.0.0, up to and including 1.9.6

Published 2026-06-30. Last modified 2026-07-02.