bsmi021 mcp-file-context-server 1.0.0 Path Resolution src/index.ts read_context path path traversal

Summaryinfo

A vulnerability was found in bsmi021 mcp-file-context-server 1.0.0 and classified as problematic. This affects the function read_context of the file src/index.ts of the component Path Resolution. Executing a manipulation of the argument path can lead to path traversal. This vulnerability is registered as CVE-2026-81486. It is possible to launch the attack remotely. 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 was found in bsmi021 mcp-file-context-server 1.0.0. It has been declared as problematic. This vulnerability affects the function read_context of the file src/index.ts of the component Path Resolution. The manipulation of the argument path with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-81486. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1006.

It is possible to download the exploit at github.com. 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.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-66833). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Artificial Intelligence Software

Vendor

• bsmi021

Name

• mcp-file-context-server

Version

• 1.0.0

Website

• Product: https://github.com/bsmi021/mcp-file-context-server/

CPE 2.3info

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CPE 2.2info

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Threat Intelligenceinfo

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Submitinfo

Accepted

• Submit #887137: bsmi021 mcp-file-context-server 1.0.0 Arbitrary File Read (by cccccccti)

Once again VulDB remains the best source for vulnerability data.

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