CVE-2026-6589: ComfyUI server.py create_origin_only_middleware cross-site request forgery

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-20 · updated 2026-06-17
Weakness: CWE-352

Description

A security vulnerability has been detected in ComfyUI up to 0.13.0. This affects the function create_origin_only_middleware of the file server.py. The manipulation leads to cross-site request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

ComfyUI: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+7)

References

https://gist.github.com/YLChen-007/d314f8120e47601dfa3ac8b899f12d1f
https://vuldb.com/submit/791108
https://vuldb.com/vuln/358224
https://vuldb.com/vuln/358224/cti

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