Security advisory

{
  "id": "bd0129d9a9e283200463d6a3f35023f0c2a9ab6e062b7c5a1feaed364378c4ee",
  "url": "https://osv.dev/vulnerability/CVE-2021-21623",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-21623",
    "summary": "An incorrect permission check in Jenkins Matrix Authorization Strategy Plugin 2.6.5 and earlier allows attackers with Item/Read permission on nested items to access them, even if they lack Item/Read permission for parent folders.",
    "evidence": "osv:CVE-2021-21623",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-21623",
      "aliases": [
        "CVE-2021-21623",
        "GHSA-96jw-3xw4-mq9p"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/jenkinsci/matrix-auth-plugin",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "847abe7874b52fa0462fc59d52ac4589119da568"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:jenkins:matrix_authorization_strategy:*:*:*:*:*:jenkins:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.6.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "matrix-auth-2.6.5",
            "matrix-auth-2.6.4",
            "matrix-auth-2.6.3",
            "matrix-auth-2.6.2",
            "matrix-auth-2.6.1",
            "matrix-auth-2.6",
            "matrix-auth-2.5",
            "matrix-auth-2.4.2",
            "matrix-auth-2.4.1",
            "matrix-auth-2.4",
            "matrix-auth-2.3",
            "matrix-auth-2.2",
            "matrix-auth-2.1.1",
            "matrix-auth-2.1",
            "matrix-auth-2.0",
            "matrix-auth-2.0-beta-3",
            "matrix-auth-2.0-beta-2",
            "matrix-auth-2.0-beta-1",
            "matrix-auth-1.7",
            "matrix-auth-1.6",
            "matrix-auth-1.5",
            "matrix-auth-1.4",
            "matrix-auth-1.3.2",
            "matrix-auth-1.3.1",
            "matrix-auth-1.3",
            "matrix-auth-1.2",
            "matrix-auth-1.1",
            "matrix-auth-1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21623.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:31.252607345Z",
      "provider": "osv",
      "references": [
        "https://www.jenkins.io/security/advisory/2021-03-18/#SECURITY-2180"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-21623",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 432752,
  "published_at": "2021-03-18T14:15:13.227+00:00"
}