Path Traversal Vulnerability in ComfyUI by ComfyAnonymous
CVE-2026-6590

5.3MEDIUM

Key Information:

Vendor

ComfyAnonymous

Status
Comfyui
Vendor
CVE Published:
20 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6590?

A path traversal vulnerability exists in ComfyUI versions up to 0.13.0, specifically affecting the model preview feature within the get_model_preview function in model_manager.py. This flaw enables attackers to manipulate file paths, potentially exposing sensitive files or executing arbitrary code. The vulnerability can be exploited remotely and poses a significant risk, especially since it has been disclosed publicly and the vendor has not addressed the issue despite early notifications.

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-2026-6590 - Proof of Concept

References

https://vuldb.com/vuln/358225
vdb-entrytechnical-description
https://vuldb.com/vuln/358225/cti
signaturepermissions-required
https://vuldb.com/submit/791109
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Eric-c (VulDB User)
VulDB CNA Team
.