ishayoyo excel-mcp up to 1.0.2 read_file/write_file src/index.ts filePath/outputPath path traversal

Summaryinfo

A vulnerability, which was classified as critical, has been found in ishayoyo excel-mcp up to 1.0.2. The affected element is an unknown function of the file src/index.ts of the component read_file/write_file. The manipulation of the argument filePath/outputPath leads to path traversal. This vulnerability is documented as CVE-2026-10278. The attack can be initiated remotely. Additionally, an exploit exists. 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, has been found in ishayoyo excel-mcp up to 1.0.2. This issue affects an unknown functionality of the file src/index.ts of the component read_file/write_file. The manipulation of the argument filePath/outputPath 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, integrity, and availability.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-10278. 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.

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Artificial Intelligence Software

Vendor

• ishayoyo

Name

• excel-mcp

Version

• 1.0.0
• 1.0.1
• 1.0.2

Website

• Product: https://github.com/ishayoyo/excel-mcp/

CPE 2.3info

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CPE 2.2info

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Exploitinginfo

Threat Intelligenceinfo

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Entryinfo

Submitinfo

Accepted

• Submit #825418: ishayoyo excel-mcp 1.0.2 Path Traversal (by ccccccctfi)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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