Cross-Site Scripting Vulnerability in ComfyUI File Server
CVE-2026-6593

5.1MEDIUM

Key Information:

Vendor

comfyanonymous

Status
Comfyui
Vendor
CVE Published:
20 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6593?

A cross-site scripting (XSS) vulnerability has been identified in the View Endpoint component of ComfyUI up to version 0.13.0. This flaw allows potential attackers to execute malicious scripts on users' browsers when they interact with vulnerable functionalities of the file server.py. The exploit can be triggered remotely, raising significant concerns for users as the vendor has not responded to prior disclosures regarding this issue. The risk emphasizes the critical need for users to update to patched versions to mitigate potential exploitation.

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-2026-6593 - Proof of Concept

References

https://vuldb.com/vuln/358228
vdb-entry
https://vuldb.com/vuln/358228/cti
signaturepermissions-required
https://vuldb.com/submit/791114
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
.