debugmcp mcp-debugger server.ts handleGetSourceContext path traversal

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-9467
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-25 16:16:20 UTC
Updated2026-05-26 19:54:40 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 2.1 LOW from [email protected]

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.000440000 probability, percentile 0.137610000 (date 2026-05-31)

Problem Types: CWE-22 | CWE-22 Path Traversal

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2.1LOWCVSS: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/C...
4.0CNADECLARED5.3MEDIUMCVSS: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
3.1[email protected]Primary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
3.0CNADECLARED4.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
2.0[email protected]Secondary4AV:N/AC:L/Au:S/C:P/I:N/A:N
2.0CNADECLARED4AV:N/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Debugmcp Mcp-debugger affected 0.1 Not specified
CNA Debugmcp Mcp-debugger affected 0.2 Not specified
CNA Debugmcp Mcp-debugger affected 0.3 Not specified
CNA Debugmcp Mcp-debugger affected 0.4 Not specified
CNA Debugmcp Mcp-debugger affected 0.5 Not specified
CNA Debugmcp Mcp-debugger affected 0.6 Not specified
CNA Debugmcp Mcp-debugger affected 0.7 Not specified
CNA Debugmcp Mcp-debugger affected 0.8 Not specified
CNA Debugmcp Mcp-debugger affected 0.9 Not specified
CNA Debugmcp Mcp-debugger affected 0.10 Not specified
CNA Debugmcp Mcp-debugger affected 0.11 Not specified
CNA Debugmcp Mcp-debugger affected 0.12 Not specified
CNA Debugmcp Mcp-debugger affected 0.13 Not specified
CNA Debugmcp Mcp-debugger affected 0.14 Not specified
CNA Debugmcp Mcp-debugger affected 0.15 Not specified
CNA Debugmcp Mcp-debugger affected 0.16 Not specified
CNA Debugmcp Mcp-debugger affected 0.17 Not specified
CNA Debugmcp Mcp-debugger affected 0.18 Not specified
CNA Debugmcp Mcp-debugger affected 0.19 Not specified
CNA Debugmcp Mcp-debugger affected 0.20.0 Not specified

References

ReferenceSourceLinkTags
github.com/hyk6225/public_exp/issues/1 [email protected] github.com
vuldb.com/vuln/365448/cti [email protected] vuldb.com
vuldb.com/vuln/365448 [email protected] vuldb.com
vuldb.com/submit/813980 [email protected] vuldb.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: KkKkKO (VulDB User) (en)

CNA: VulDB CNA Team (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-05-24T00:00:00.000ZAdvisory disclosed
CNA2026-05-24T02:00:00.000ZVulDB entry created
CNA2026-05-24T11:03:28.000ZVulDB entry last update

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