mcp-gitlab Path Traversal via job_id Parameter

{
  "id": "167eefa75626a24583cde2fbb163a398c1eb99532227921c9014386d186f603d",
  "url": "https://osv.dev/vulnerability/CVE-2026-61462",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "mcp-gitlab Path Traversal via job_id Parameter",
    "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.",
    "evidence": "osv:CVE-2026-61462",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-61462",
      "aliases": [
        "CVE-2026-61462"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/zereight/gitlab-mcp",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "74a8c834424ff557ad8bc6f225e4dc5acf80aa13"
                },
                {
                  "fixed": "e2a81a047ab8750fa5bfa1763b5d85e5616f3994"
                }
              ],
              "database_specific": {
                "extracted_events": [
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                    "range": [
                      {
                        "introduced": "0"
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                      {
                        "fixed": "2.1.18"
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                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "e2a81a047ab8750fa5bfa1763b5d85e5616f3994"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
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          "versions": [
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61462.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.530351413Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61462.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-61462",
        "https://www.vulncheck.com/advisories/mcp-gitlab-path-traversal-via-job-id-parameter",
        "https://github.com/zereight/gitlab-mcp/issues/587",
        "https://github.com/zereight/gitlab-mcp/commit/e2a81a047ab8750fa5bfa1763b5d85e5616f3994",
        "https://github.com/zereight/gitlab-mcp"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-73"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61462.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-61462",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497724,
  "published_at": "2026-07-13T17:17:26.026+00:00"
}