CVE-2026-56276

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 62/100
Published: 2026-06-20 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: None
AT: None
VC: None
VI: High
VA: None

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.

Affected Software (1)

VendorProductVersion
Flowise Flowise 0 < 3.1.2

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

6.0 / 10.0 v4.0
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 — Exploitation Probability

0.37%
Raw Score 0.003660
Percentile 30.9%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00366
2026-11-12
0.00366
2026-11-10
0.00366
2026-11-09
0.00366
2026-11-08
0.00366

Intelligence Sources

mitre ref →