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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Thu, 12 Nov 2026 15:30:00 +0000


Thu, 12 Nov 2026 15:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Unauthenticated Path Traversal in ComfyUI-Easy-Use Allows Remote Code Execution
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cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published:

Updated: 2026-11-12T15:13:46.135Z

Reserved: 2026-11-06T14:47:00.908Z

Link: CVE-2026-123790

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-12T15:17:46.667

Modified: 2026-11-12T15:17:46.667

Link: CVE-2026-123790

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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