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.

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Affected versions, risk and source history

Exploitation and risk

Source status

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Advisory history

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12 Nov 2026 19:16:18 UTC