CVE-2026-56670CWE-79cross-site-scripting

CVE-2026-56670

High · published July 31, 2026

CVSS v3.1
8.2
EPSS
0%
Percentile
32.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00397 · 32.7th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-07-31T10:16Z
References (3)
https://github.com/Comfy-Org/ComfyUI/commit/96e0e3585b41e1417442eaa14ec57f7b4ffcb5e0 · [email protected]https://github.com/Comfy-Org/ComfyUI/releases/tag/v0.28.0 · [email protected]https://github.com/Comfy-Org/ComfyUI/security/advisories/GHSA-rj8c-c4p8-3c5h · [email protected]
EPSS history
Timeline
  • 31 JUL 04:17Z
    ComfyUI: Stored XSS via SVG file upload on the /view endpoint
    cvelistv5