CVE-2026-9467: debugmcp mcp-debugger server.ts handleGetSourceContext path traversal

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-25 · updated 2026-07-23
Weakness: CWE-22

Description

A vulnerability was identified in debugmcp mcp-debugger up to 0.20.0. Impacted is the function handleGetSourceContext of the file src/server.ts. The manipulation leads to path traversal. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

debugmcp mcp-debugger: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+14)

References

https://github.com/hyk6225/public_exp/issues/1
https://vuldb.com/submit/813980
https://vuldb.com/vuln/365448
https://vuldb.com/vuln/365448/cti

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