CVE-2026-56670

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.

CVSS 3.1

8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 33% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2026-07-31

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

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

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