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CVE-2026-123790

Unauthenticated Path Traversal in ComfyUI-Easy-Use Allows Remote Code Execution

cve-program · severity unknownCVSS unknownCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-123790

Published

ComfyUI-Easy-Use version 1.3.6 contains a path traversal vulnerability in the `save_preview()` handler for POST `/easyuse/save/{name}`. The handler checks the source directory before appending a user-supplied filename and allows the request to select the `custom_nodes` directory as a copy destination. An unauthenticated attacker who can reach the ComfyUI server can overwrite an installed custom node’s Python entry point with an uploaded file. When ComfyUI restarts and loads the modified node, the attacker’s code runs with the privileges of the ComfyUI process.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-123790

Published

ComfyUI-Easy-Use

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "ComfyUI-Easy-Use",
                    "product": "ComfyUI-Easy-Use",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "1.3.6",
                            "lessThanOrEqual": "1.4.1",
                            "versionType": "custom"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON