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CVE-2026-123790— Unauthenticated Path Traversal in ComfyUI-Easy-Use Allows Remote Code Execution

Quick assessment

Affected
ComfyUI-Easy-Use ComfyUI-Easy-Use
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ComfyUI-Easy-Use version 1.3.6 contains a path traversal vulnerability in the handler for POST . The handler checks the source directory before appending a user-supplied filename and allows the request to select the directory as a copy destination. An unauthen

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I. Basic Information for CVE-2026-123790

Vulnerability Information

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Vulnerability Title
Unauthenticated Path Traversal in ComfyUI-Easy-Use Allows Remote Code Execution
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ComfyUI-Easy-Use ComfyUI-Easy-Use 1.3.6 ~ 1.3.6 -

II. Public POCs for CVE-2026-123790

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III. Intelligence Information for CVE-2026-123790

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Other References for CVE-2026-123790 (2)