Security advisory

{
  "id": "fdf323c6b2d839077b855b11464e93403a1c6ac3d88c41bdcaea41e289e8c692",
  "url": "https://osv.dev/vulnerability/CVE-2021-37156",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-37156",
    "summary": "Redmine 4.2.0 and 4.2.1 allow existing user sessions to continue upon enabling two-factor authentication for the user's account, but the intended behavior is for those sessions to be terminated.",
    "evidence": "osv:CVE-2021-37156",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-37156",
      "aliases": [
        "BIT-redmine-2021-37156",
        "CVE-2021-37156"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/redmine/redmine",
              "type": "GIT",
              "events": [
                {
                  "introduced": "47d3615a0b2a1d8c9db3d90a0c836e1d24f036a6"
                },
                {
                  "last_affected": "5b4b548b385db35c5546a98774b19b3f559e13c2"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:redmine:redmine:4.2.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.2.0"
                      },
                      {
                        "last_affected": "4.2.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:redmine:redmine:4.2.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.2.1"
                      },
                      {
                        "last_affected": "4.2.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.2.0",
            "4.2.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-37156.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:56.765944050Z",
      "provider": "osv",
      "references": [
        "https://www.redmine.org/news/132",
        "https://www.redmine.org/projects/redmine/wiki/Security_Advisories"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-37156",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 438725,
  "published_at": "2021-08-05T21:15:12.643+00:00"
}