CVE-2026-56276: Flowise

Medium severity, CVSS 6.0. EPSS: 0.4% chance of exploitation in the next 30 days.

Flowise before 3.1.2 contains a mass assignment vulnerability in the PUT /api/v1/user endpoint that allows authenticated users to directly modify the credential field without validation. Attackers can bypass password change verification and session invalidation by supplying a crafted password hash, establishing persistent account access after temporary session compromise.

Affected products

• Flowise Flowise: before 3.1.2 (fixed in 3.1.2)

Published 2026-06-20. Last modified 2026-06-22.