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CVE-2026-9467

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:739f8a19a06ac3ef36f064be28349408e99ce5a9f434547373412f6c7e5b6c3f
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS: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","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":4,"vectorString":"AV:N/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/metrics/3/cvssV2_0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:debugmcp:mcp-debugger:*:*:*:*:*:*:*:*"],"product":"mcp-debugger","vendor":"debugmcp","versions":[{"status":"affected","version":"0.1"},{"status":"affected","version":"0.2"},{"status":"affected","version":"0.3"},{"status":"affected","version":"0.4"},{"status":"affected","version":"0.5"},{"status":"affected","version":"0.6"},{"status":"affected","version":"0.7"},{"status":"affected","version":"0.8"},{"status":"affected","version":"0.9"},{"status":"affected","version":"0.10"},{"status":"affected","version":"0.11"},{"status":"affected","version":"0.12"},{"status":"affected","ve…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS: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","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":4,"vectorString":"AV:N/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/metrics/3/cvssV2_0

CWE assertions

1 source assertion
{"cweId":"CWE-22","description":"Path Traversal","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"tags":["exploit","issue-tracking"],"url":"https://github.com/hyk6225/public_exp/issues/1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/references/3
{"name":"Submit #813980 | debugmcp mcp-debugger 3e83906c8358965efd683c734e94a75d338400fa Path Traversal","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/813980"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/references/2
{"name":"VDB-365448 | debugmcp mcp-debugger server.ts handleGetSourceContext path traversal","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/365448"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/references/0
{"name":"VDB-365448 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/365448/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0c271e62ad59acedccac1656f618653e127605e8b7aa3349c71e57efadaa3ae0 · sha256:fe6c04185b8b73ba… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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