CVE-2026-56276 Flowise <3.1.2 Mass Assignment: Credential Override
CVE-2026-56276 Published on June 20, 2026
Flowise - Mass Assignment in PUT /api/v1/user Allows Password Hash Override
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.
Weakness Type
What is a Mass Assignment Vulnerability?
The software receives input from an upstream component that specifies multiple attributes, properties, or fields that are to be initialized or updated in an object, but it does not properly control which attributes can be modified.
CVE-2026-56276 has been classified to as a Mass Assignment vulnerability or weakness.
Products Associated with CVE-2026-56276
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Affected Versions
Flowise:- Before 3.1.2 is affected.
- Version 3.1.2 is unaffected.