CVE-2026-10278: ishayoyo excel-mcp read_file/write_file index.ts path traversal

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-01 · updated 2026-07-22
Weakness: CWE-22

Description

A vulnerability was determined in ishayoyo excel-mcp up to 1.0.2. Impacted is an unknown function of the file src/index.ts of the component read_file/write_file. Executing a manipulation of the argument filePath/outputPath can lead to path traversal. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

ishayoyo excel-mcp: 1.0.0, 1.0.1, 1.0.2

References

https://github.com/ishayoyo/excel-mcp/
https://github.com/ishayoyo/excel-mcp/issues/6
https://vuldb.com/cve/CVE-2026-10278
https://vuldb.com/submit/825418
https://vuldb.com/vuln/367571
https://vuldb.com/vuln/367571/cti

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