CVE-2026-56670 (GCVE-0-2026-56670)
Vulnerability from cvelistv5 – Published: 2026-07-31 04:17 – Updated: 2026-07-31 19:00
VLAI
EPSS
VEX
Title
ComfyUI: Stored XSS via SVG file upload on the /view endpoint
Summary
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.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 18:59 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/Comfy-Org/ComfyUI/security/adv… | x_refsource_CONFIRM |
| https://github.com/Comfy-Org/ComfyUI/commit/96e0e… | x_refsource_MISC |
| https://github.com/Comfy-Org/ComfyUI/releases/tag… | x_refsource_MISC |
Impacted products
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| Author | Source | Type | Date | Other |
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Nomenclature
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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