CVE-2026-56276

Medium

Description

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.

SeverityMedium

CVSS6.0

Exploit probability31. percentile0.4%

ProductFlowise

PublishedJun 20, 2026

First seenJun 20, 2026

Weakness typeCWE-915CWE-915

How to fix

Update

flowise3.1.2 or later

Vendor advisories

github.com/FlowiseAI/Flowise/security/advisories/GHSA-59fh-9f3p-7m39

Affected products

Product	Affected versions	Fixed in
flowisenpm	v < 3.1.2	3.1.2

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