0215AndrewFeng ACE-MCP up to 4.10.8 MCP Tool getFileSnippet.ts get_file_snippet projectRootPath/filePath path traversal

Summaryinfo

A vulnerability, which was classified as problematic, has been found in 0215AndrewFeng ACE-MCP up to 4.10.8. The impacted element is the function get_file_snippet of the file getFileSnippet.ts of the component MCP Tool. The manipulation of the argument projectRootPath/filePath leads to path traversal. This vulnerability is referenced as CVE-2026-94046. Remote exploitation of the attack is possible. Furthermore, an exploit is available. isPathInsideProjectRoot only blocks filePath escaping the attacker-chosen projectRootPath; the root itself is untrusted client input - set projectRootPath=/etc, filePath=hosts and the guard passes. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability was found in 0215AndrewFeng ACE-MCP up to 4.10.8 and classified as problematic. This issue affects the function get_file_snippet of the file getFileSnippet.ts of the component MCP Tool. The manipulation of the argument projectRootPath/filePath with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-94046. The exploitation is known to be easy. The attack may be initiated remotely. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

The exploit is available 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. isPathInsideProjectRoot only blocks filePath escaping the attacker-chosen projectRootPath; the root itself is untrusted client input - set projectRootPath=/etc, filePath=hosts and the guard passes.

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-2026-83780). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Artificial Intelligence Software

Vendor

• 0215AndrewFeng

Name

• ACE-MCP

Version

• 4.10.0
• 4.10.1
• 4.10.2
• 4.10.3
• 4.10.4
• 4.10.5
• 4.10.6
• 4.10.7
• 4.10.8

Website

• Product: https://github.com/0215AndrewFeng/ACE-MCP/

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Submitinfo

Accepted

• Submit #949256: 0215AndrewFeng ACE-MCP 4.10.8 Path Traversal (by Xh1Xxhg)

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

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