What’s Vulnerable › Vulnerabilities

CVE-2026-19371: Nikolaibibo claude-comfyui-mcp comfy_upload_image utils.ts copyFileSync path traversal

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-09 · updated 2026-10-23
• Weakness: CWE-22

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.

Affected products

• Nikolaibibo claude-comfyui-mcp: 1.0.0

References

• https://github.com/Nikolaibibo/claude-comfyui-mcp/
• https://github.com/Nikolaibibo/claude-comfyui-mcp/issues/3
• https://vuldb.com/cve/CVE-2026-19371
• https://vuldb.com/submit/866269
• https://vuldb.com/vuln/387255
• https://vuldb.com/vuln/387255/cti
• https://github.com/Nikolaibibo/claude-comfyui-mcp/issues/3

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