CVE-2026-56276CWE-915

Flowise - Mass Assignment in PUT /api/v1/user Allows Password Hash Override

Medium · published June 20, 2026

CVSS v4.0
6.0
EPSS
0%
Percentile
29.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.0 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00366 · 29.3th percentile
Weakness
CWE-915 · Improperly Controlled Modification of Dynamically-Determined Object Attributes
Published
2026-06-20T15:24Z
EPSS history
Timeline
  • 20 JUN 15:24Z
    Flowise - Mass Assignment in PUT /api/v1/user Allows Password Hash Override
    cvelistv5