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CVE-2026-56672

ComfyUI is a node-based diffusion model GUI, API, and backend. Prior to 0.28.0, GET /userdata/{file} served user-controlled HTML and SVG files with extension-derived content types, allowing stored cross-site scripting in the ComfyUI origin and access to browser-stored API tokens, settings, workflows, and authenticated-equivalent API calls. The handler used web.FileResponse(path), so an uploaded .html/.svg was served as text/html/image/svg+xml. POST /userdata stores arbitrary request bodies (conf
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:aafe8cd1a03d81eab757f5aa8bfdcce4ce75a9151e71f52077019e9a2680aadf
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"ComfyUI","vendor":"Comfy-Org","versions":[{"status":"affected","version":"< 0.28.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e85ee6e953b466e82af58758e58f25b6bed1f04dc5da757e1e48ffd672e13e29 · sha256:5c7e270969bb8657… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e85ee6e953b466e82af58758e58f25b6bed1f04dc5da757e1e48ffd672e13e29 · sha256:5c7e270969bb8657… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e85ee6e953b466e82af58758e58f25b6bed1f04dc5da757e1e48ffd672e13e29 · sha256:5c7e270969bb8657… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/Comfy-Org/ComfyUI/commit/96e0e3585b41e1417442eaa14ec57f7b4ffcb5e0","tags":["x_refsource_MISC"],"url":"https://github.com/Comfy-Org/ComfyUI/commit/96e0e3585b41e1417442eaa14ec57f7b4ffcb5e0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e85ee6e953b466e82af58758e58f25b6bed1f04dc5da757e1e48ffd672e13e29 · sha256:5c7e270969bb8657… · /containers/cna/references/1
{"name":"https://github.com/Comfy-Org/ComfyUI/releases/tag/v0.28.0","tags":["x_refsource_MISC"],"url":"https://github.com/Comfy-Org/ComfyUI/releases/tag/v0.28.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e85ee6e953b466e82af58758e58f25b6bed1f04dc5da757e1e48ffd672e13e29 · sha256:5c7e270969bb8657… · /containers/cna/references/2
{"name":"https://github.com/Comfy-Org/ComfyUI/security/advisories/GHSA-53g8-45wq-pcv8","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Comfy-Org/ComfyUI/security/advisories/GHSA-53g8-45wq-pcv8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e85ee6e953b466e82af58758e58f25b6bed1f04dc5da757e1e48ffd672e13e29 · sha256:5c7e270969bb8657… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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