Nikolaibibo claude-comfyui-mcp 1.0.0 comfy_upload_image src/tools/utils.ts copyFileSync image_path path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k1.01

Summaryinfo

A vulnerability, which was classified as critical, has been found in Nikolaibibo claude-comfyui-mcp 1.0.0. Affected by this vulnerability is the function copyFileSync of the file src/tools/utils.ts of the component comfy_upload_image. Performing a manipulation of the argument image_path results in path traversal. This vulnerability is known as CVE-2026-19371. Attacking locally is a requirement. Furthermore, an exploit is available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability, which was classified as critical, was found in Nikolaibibo claude-comfyui-mcp 1.0.0. This affects the function copyFileSync of the file src/tools/utils.ts of the component comfy_upload_image. The manipulation of the argument image_path with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-19371. The exploitability is told to be easy. Attacking locally is a requirement. Technical details and a exploit are known. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Proof-of-Concept
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/09/2026 Advisory disclosed
08/09/2026 +0 days VulDB entry created
08/09/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Not defined

CVE: CVE-2026-19371 (🔒)
GCVE (CVE): GCVE-0-2026-19371
GCVE (VulDB): GCVE-100-387255
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/09/2026 09:13
Changes: 08/09/2026 09:13 (58)
Complete: 🔍
Submitter: gongyanyu05
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #866269: Nikolaibibo claude-comfyui-mcp 1.0.0 Path Traversal (by gongyanyu05)

Be aware that VulDB is the high quality source for vulnerability data.

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