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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.

PUBLISHED Reserved 2026-05-24 | Published 2026-05-25 | Updated 2026-05-26 | Assigner VulDB




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
MEDIUM: 4.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
4.0AV:N/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR

Problem types

Path Traversal

Product status

0.1
affected

0.2
affected

0.3
affected

0.4
affected

0.5
affected

0.6
affected

0.7
affected

0.8
affected

0.9
affected

0.10
affected

0.11
affected

0.12
affected

0.13
affected

0.14
affected

0.15
affected

0.16
affected

0.17
affected

0.18
affected

0.19
affected

0.20.0
affected

Timeline

2026-05-24:Advisory disclosed
2026-05-24:VulDB entry created
2026-05-24:VulDB entry last update

Credits

KkKkKO (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/365448 (VDB-365448 | debugmcp mcp-debugger server.ts handleGetSourceContext path traversal) vdb-entry technical-description

vuldb.com/vuln/365448/cti (VDB-365448 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/813980 (Submit #813980 | debugmcp mcp-debugger 3e83906c8358965efd683c734e94a75d338400fa Path Traversal) third-party-advisory

github.com/hyk6225/public_exp/issues/1 exploit issue-tracking

cve.org (CVE-2026-9467)

nvd.nist.gov (CVE-2026-9467)

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