CVE-2026-9467 Details
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.
A path traversal vulnerability has been identified in debugmcp mcp-debugger versions prior to 0.20.0. The issue arises in the handleGetSourceContext function within src/server.ts, where user-controlled file input is not properly validated. In host mode, the input path is returned unchanged, allowing access to arbitrary absolute filesystem paths. This vulnerability can be exploited remotely, leading to unauthorized file read capabilities.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 25, 2026CISA-ADP
Assessed May 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/hyk6225/public_exp/issues/1 | [email protected] | ExploitIssue TrackingTechnical Description |
| https://vuldb.com/submit/813980 | [email protected] | Permission Required |
| https://vuldb.com/vuln/365448 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/365448/cti | [email protected] | AdvisoryPermission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| debugmcp mcp-debugger | <= 0.20.0 (semver) |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 25, 2026 | New CVE Received | [email protected] |