CVE-2026-56670: high-severity vulnerability in Comfy-Org ComfyUI
ComfyUI: Stored XSS via SVG file upload on the /view endpoint
Published
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.2epss 0.4%
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/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Affected products
Comfy-Org · ComfyUIRelated CVEs — Comfy-Org ComfyUI
In the same product, most dangerous first.
CVE-2026-68771CRITICALComfyUI 0.23.0 Unauthenticated RCE via LoadTrainingDataset Pickle DeserializationEPSS 1.1%CVE-2026-56671HIGHComfyUI: Path traversal in /experiment/models/preview allows arbitrary image file readEPSS 1.0%CVE-2026-56673HIGHComfyUI: Path traversal in LoadImage via the /prompt API allows arbitrary file existence probing and image exfiltrationEPSS 0.6%CVE-2026-56672HIGHComfyUI: Stored XSS via /userdata/{file} due to Missing Content-Type SanitizationEPSS 0.4%CVE-2026-92816HIGHComfyUI before 0.30.0 Path Traversal via dataset save nodesEPSS 0.2%