mcp-gitlab Path Traversal via job_id Parameter
Priority HIGH 79CWE-73Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-73 and the CVSS impact.
Summary
mcp-gitlab contains a path traversal vulnerability in the job_id parameter of build/index.js that allows attackers to redirect GitLab API requests to arbitrary endpoints. Attackers can supply crafted job_id values like ../../../user to escape the intended path prefix and access arbitrary GitLab API resources using the operator's personal access token.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00483 41st percentileScored 2026-11-07
Fix Fixed mcp-gitlab (zereight): 2.1.18
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA mcp-gitlab (zereight) Fixed in 2.1.18
Timeline
- 2026-10-02 Threatist record created from CVE-2026-61462
- 2026-10-03 Alias added: GHSA-5383-j2p9-qfg3
References
Patch 1
Other 2
More zereight vulnerabilities
- TI-2026-44112 Path traversal in zereight gitlab-mcp CVSS 3.1CRITICAL 9.8
- TI-2026-44111 @zereight/mcp-gitlab Vulnerable to Server-Side Request Forgery CVSS 3.1CRITICAL 9.6
- TI-2026-44113 @zereight/mcp-gitlab: DNS rebinding reaches local Streamable HTTP MCP transport CVSS 3.1CRITICAL 9.6
Sources
- CVE-2026-61462 · CVE Program
- CVE-2026-61462 · NVD
- FIRST EPSS
- GHSA-5383-j2p9-qfg3 · GitHub Advisory Database · CC BY 4.0
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