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archive/Patch now/AIR-2026-1120
closedclosed 20 Jun 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-56276: Flowise mass assignment vulnerability in user endpoint

Flowise

Flowise before version 3.1.2 contains a mass assignment vulnerability in the user API endpoint that lets authenticated users directly modify credential fields without validation. Attackers can bypass password change verifications to maintain persistent access.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
6.0
EPSS
<0.01 · top 70% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
20 Jun 2026
last update
20 Jun 2026
CVE ids
CVE-2026-56276other records

Timeline · 1

  1. 20 Jun 2026CVE-2026-56276: Flowise before 3.1.2 contains a mass assignment vulnerability in the PUT /api/v1/user endpoint that allows authenticated users to…

Sources · 1

Advisories and databases

  1. 2026-06-20
    CVE-2026-56276: Flowise before 3.1.2 contains a mass assignment vulnerability in the PUT /api/v1/user endpoint that allows authenticated users to…
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-56276

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
dates
happened 20 Jun 2026 · first reported 20 Jun 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 10:04Z · updated 2026-10-18 10:04Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-56276: Flowise mass assignment vulnerability in user endpoint

https://gcdradar.vercel.app/incidents/cve-2026-56276-flowise-mass-assignment-vulnerability-in-user · AIR-2026-1120 · closed 2026-06-20

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-06-20
- AI role: Attack on AI
- Products: Flowise
- CVE ids: CVE-2026-56276
- CVSS: 6

## Summary

Flowise before version 3.1.2 contains a mass assignment vulnerability in the user API endpoint that lets authenticated users directly modify credential fields without validation. Attackers can bypass password change verifications to maintain persistent access.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-06-20: CVE-2026-56276: Flowise before 3.1.2 contains a mass assignment vulnerability in the PUT /api/v1/user endpoint that allows authenticated users to… (https://nvd.nist.gov/vuln/detail/CVE-2026-56276)

## Sources

- 2026-06-20 NVD: CVE-2026-56276: Flowise before 3.1.2 contains a mass assignment vulnerability in the PUT /api/v1/user endpoint that allows authenticated users to… https://nvd.nist.gov/vuln/detail/CVE-2026-56276

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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