EUVD-2026-23737Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
9DescriptionCVE.org
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.
AnalysisAI
Stored cross-site scripting (XSS) in ComfyUI's userdata endpoint (getuserdata function in app/user_manager.py) allows authenticated attackers to inject malicious scripts that execute in other users' browsers. Affected versions range from 0.1 through 0.13.0. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) Valid authentication to the ComfyUI instance (PR:L); (2) Ability to submit data to the getuserdata endpoint or user profile modification endpoint (no special configuration needed for standard deployments); (3) Another user must view the attacker's injected data or click a link containing the malicious payload (UI:R). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 3.5 (Low) with EPSS data unavailable suggests limited real-world risk despite public exploit availability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated attacker logs into a ComfyUI instance and injects malicious JavaScript into a user profile field (e.g., username, email, or preferences) via the userdata endpoint. When another user or an administrator views the attacker's profile or user list, the injected script executes in their browser with their session privileges, allowing session hijacking, credential theft, or further system compromise. … |
| Remediation | No vendor-released patch identified at time of analysis - the vendor was contacted early but did not respond. … Detailed patch versions, workarounds, and compensating controls in full report. |
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