Vulnerability DatabaseCVE-2026-56670
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CVE-2026-56670
Published:July 31, 2026
Updated:August 04, 2026
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.
Affected Packages
https://github.com/Comfy-Org/ComfyUI.git (GITHUB):
Affected version(s) >=v0.10.0 <v0.28.0
Fix Suggestion:
Update to version v0.28.0
Related Resources (5)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56670.json
https://nvd.nist.gov/vuln/detail/CVE-2026-56670
https://github.com/Comfy-Org/ComfyUI/commit/96e0e3585b41e1417442eaa14ec57f7b4ffcb5e0
https://github.com/Comfy-Org/ComfyUI/security/advisories/GHSA-rj8c-c4p8-3c5h
https://github.com/Comfy-Org/ComfyUI/releases/tag/v0.28.0
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CVSS v4
Base Score:
8.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79
EPSS
Base Score:
0.22