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

published 2026-11-12 2d ago modified 2026-11-12 2d ago also EUVD-2026-124521

cvss: —; not scored
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 11%
public exploits: 0; none known

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.

Patch / fix

links 1

github.com/yolain/ComfyUI-Easy-Use@8a0f2fc commit

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Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-14).

Affected products

ComfyUI-Easy-Use ComfyUI-Easy-Use

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

CVE List CVE-2026-123790
NVD CVE-2026-123790

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