Security advisory

{
  "id": "92deeea9639ec26abc1ff63e74e20fc41a8e15b8e507fccc808f795f260ca752",
  "url": "https://osv.dev/vulnerability/CVE-2021-21671",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-21671",
    "summary": "Jenkins 2.299 and earlier, LTS 2.289.1 and earlier does not invalidate the previous session on login.",
    "evidence": "osv:CVE-2021-21671",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-21671",
      "aliases": [
        "BIT-jenkins-2021-21671",
        "CVE-2021-21671",
        "GHSA-4wr9-2xc6-jmg5"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/jenkinsci/jenkins",
              "type": "GIT",
              "events": [
                {
                  "introduced": "abbb02568178cc072ada2f438c0ec446dbd48633"
                },
                {
                  "fixed": "21bfcc6c61c2c41af07aa0fda29ee343ac2b70ed"
                },
                {
                  "introduced": "a22f822b74a28d4100a6cf402df0855d7c92d1a3"
                },
                {
                  "fixed": "285a2536a96152a0e66ad0cc8cef9128094aa581"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*",
                    "range": [
                      {
                        "introduced": "2.266"
                      },
                      {
                        "fixed": "2.300"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*",
                    "range": [
                      {
                        "introduced": "2.277.1"
                      },
                      {
                        "fixed": "2.289.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "jenkins-2.299",
            "jenkins-2.289.2-rc",
            "jenkins-2.298",
            "jenkins-2.297",
            "jenkins-2.289.1",
            "jenkins-2.296",
            "jenkins-2.295",
            "jenkins-2.294",
            "jenkins-2.293",
            "jenkins-2.292",
            "jenkins-2.289",
            "jenkins-2.291",
            "jenkins-2.290",
            "jenkins-2.288",
            "jenkins-2.287",
            "jenkins-2.286",
            "jenkins-2.285",
            "jenkins-2.284",
            "jenkins-2.283",
            "jenkins-2.282",
            "jenkins-2.281",
            "jenkins-2.280",
            "jenkins-2.279",
            "jenkins-2.278",
            "jenkins-2.277",
            "jenkins-2.276",
            "jenkins-2.274",
            "jenkins-2.273",
            "jenkins-2.272",
            "jenkins-2.271",
            "jenkins-2.270",
            "jenkins-2.269",
            "jenkins-2.268",
            "jenkins-2.267",
            "jenkins-2.266"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21671.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:18.132981409Z",
      "provider": "osv",
      "references": [
        "https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2371"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-21671",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429703,
  "published_at": "2021-06-30T17:15:08.987+00:00"
}