CVE-2026-19371 Nikolaibibo claude-comfyui-mcp comfy_upload_image utils.ts copyFileSync path traversal
Local attackers can exploit path traversal in the image upload utility to read or modify arbitrary files on the system.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19371?
CVE-2026-19371 is a medium-severity path traversal vulnerability in Nikolaibibo claude-comfyui-mcp, published on 9 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was identified in Nikolaibibo claude-comfyui-mcp 1.0.0. Affected is the function copyFileSync of the file src/tools/utils.ts of the component comfy_upload_image. Such manipulation of the argument image_path leads to path traversal. An attack has to be approached locally. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-22
Which versions are affected by CVE-2026-19371?
How do I fix CVE-2026-19371?
No fix has been published for CVE-2026-19371 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-19371 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19371 exists.
Sources
Also known as GHSA-g57q-682f-hr5f.