CVE-2026-56670 - Vulnerability Details - OpenCVE

ComfyUI is a modular diffusion model GUI, api and backend with a graph/nodes interface. Prior to 0.28.0, the /view endpoint served uploaded SVG files inline because image/svg+xml and related XML content types were absent from the dangerous-content-type handling, allowing stored cross-site scripting in the ComfyUI origin. This issue is fixed in version 0.28.0.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00224.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

No data.

References

Link	Providers
https://github.com/Comfy-Org/ComfyUI/commit/96e0e3585b41e1417442eaa14ec57f7b4ffcb5e0
https://github.com/Comfy-Org/ComfyUI/releases/tag/v0.28.0
https://github.com/Comfy-Org/ComfyUI/security/advisories/GHSA-rj8c-c4p8-3c5h

History

Fri, 31 Jul 2026 19:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 31 Jul 2026 05:30:00 +0000

Type	Values Removed	Values Added
Description		ComfyUI is a modular diffusion model GUI, api and backend with a graph/nodes interface. Prior to 0.28.0, the /view endpoint served uploaded SVG files inline because image/svg+xml and related XML content types were absent from the dangerous-content-type handling, allowing stored cross-site scripting in the ComfyUI origin. This issue is fixed in version 0.28.0.
Title		ComfyUI: Stored XSS via SVG file upload on the /view endpoint
Weaknesses		CWE-79
References		https://github.com/Comfy-Org/ComfyUI/commit/96e0e3585b41e1417442eaa14ec57f7b4ffcb5e0 https://github.com/Comfy-Org/ComfyUI/releases/tag/v0.28.0 https://github.com/Comfy-Org/ComfyUI/security/advisories/GHSA-rj8c-c4p8-3c5h
Metrics		cvssV3_1 `{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N'}`

MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-07-31T04:17:43.843Z

Updated: 2026-07-31T19:00:49.766Z

Reserved: 2026-06-22T16:39:01.043Z

Link: CVE-2026-56670

Vulnrichment

Updated: 2026-07-31T18:59:59.546Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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