Cross Site Scripting Vulnerability in ComfyUI by comfyanonymous
CVE-2026-6592

5.1MEDIUM

Key Information:

Vendor

comfyanonymous

Status
Comfyui
Vendor
CVE Published:
20 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6592?

A vulnerability exists in the ComfyUI application affecting versions up to 0.13.0, specifically in the getuserdata function located in app/user_manager.py. This flaw constitutes a cross site scripting (XSS) issue, allowing attackers to execute arbitrary scripts in the context of the user's browser. This remote exploit can be executed without user interaction, posing significant risks to confidentiality and integrity. The vendor was informed of this issue but has not taken any action to address it.

Affected Version(s)

ComfyUI 0.1

ComfyUI 0.2

ComfyUI 0.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-6592 - Proof of Concept

References

https://vuldb.com/vuln/358227
vdb-entrytechnical-description
https://vuldb.com/vuln/358227/cti
signaturepermissions-required
https://vuldb.com/submit/791113
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Eric-c (VulDB User)
VulDB CNA Team
.