CVE-2026-56276
MEDIUMFlowise - Mass Assignment in PUT /api/v1/user Allows Password Hash Override
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GHSA Advisory GHSA-59fh-9f3p-7m39
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-59fh-9f3p-7m39
Third Party Advisory third-party-advisory
VulnCheck Advisory: Flowise - Mass Assignment in PUT /api/v1/user Allows Password Hash Override
https://www.vulncheck.com/advisories/flowise-mass-assignment-in-put-api-v1-user-allows-password-hash-override
Scores
CVSS v4
6.0
EPSS
0.0037
EPSS Percentile
29.2%
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-915
Status
published
Products (2)
Flowise/Flowise
< 3.1.2
Flowise/Flowise
3.1.2
Published
Jun 20, 2026
Tracked Since
Jun 20, 2026