RCE in Comfyui
CVE-2026-6592
A vulnerability has been found in ComfyUI up to 0.13.0. Affected by this vulnerability is the function getuserdata of the file app/user_manager.py of the component userdata Endpoint. Such manipulation leads to cross site scripting. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Comfyui — versions 0.1, 0.2, 0.3
Weakness classification (CWE)
References
- vuldb.com/vuln/358227 (technical-description, vdb-entry)
- vuldb.com/vuln/358227/cti (signature, permissions-required)
- vuldb.com/submit/791113 (third-party-advisory)
- gist.github.com/YLChen-007/50f0cdc5e3f7b737ce99c783e487ca0d (exploit)
Frequently asked questions
- What is CVE-2026-6592?
- CVE-2026-6592 is a low-severity vulnerability in Comfyui, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-04-20.
- How severe is CVE-2026-6592?
- Low severity. CVSS v3 base score is 3.5 out of 10.