CVE-2026-7738: puchunjie doc-tools-mcp MCP mcp-server.ts open_document 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: 2026-05-04 · updated 2026-10-26
Weakness: CWE-22

Description

A security flaw has been discovered in puchunjie doc-tools-mcp 1.0.18. This affects the function create_document/open_document of the file src/mcp-server.ts of the component MCP Interface. The manipulation of the argument filePath results in path traversal. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

puchunjie doc-tools-mcp: 1.0.18

References

https://github.com/BruceJqs/public_exp/issues/38
https://github.com/puchunjie/doc-tools-mcp/
https://github.com/puchunjie/doc-tools-mcp/issues/4
https://vuldb.com/submit/807642
https://vuldb.com/vuln/360913
https://vuldb.com/vuln/360913/cti
https://github.com/puchunjie/doc-tools-mcp/issues/4

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