Misskey allows token to remain valid in cookie after signing out

{
  "id": "9c571a2ecd5a7132c57e92ded4a08c632496aa5ba8d44b31cbb447bdefe189df",
  "url": "https://osv.dev/vulnerability/CVE-2025-24896",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Misskey allows token to remain valid in cookie after signing out",
    "summary": "Misskey is an open source, federated social media platform. Starting in version 12.109.0 and prior to version 2025.2.0-alpha.0, a login token named `token` is stored in a cookie for authentication purposes in Bull Dashboard, but this remains undeleted even after logout is performed. The primary affected users will be users who have logged into Misskey using a public PC or someone else's device, but it's possible that users who have logged out of Misskey before lending their PC to someone else could also be affected. Version 2025.2.0-alpha.0 contains a fix for this issue.",
    "evidence": "osv:CVE-2025-24896",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-24896",
      "aliases": [
        "CVE-2025-24896",
        "GHSA-w98m-j6hq-cwjm"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/misskey-dev/misskey",
              "type": "GIT",
              "events": [
                {
                  "introduced": "2375359d129b63988b0658f735e1d9c014c10d71"
                },
                {
                  "fixed": "ba9f295ef2bf31cc90fa587e20b9a7655b7a1824"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "12.109.0"
                      },
                      {
                        "last_affected": "2025.1.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ba9f295ef2bf31cc90fa587e20b9a7655b7a1824"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-24896.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.803266738Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24896.json",
        "https://github.com/misskey-dev/misskey/security/advisories/GHSA-w98m-j6hq-cwjm",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-24896",
        "https://github.com/misskey-dev/misskey/commit/ba9f295ef2bf31cc90fa587e20b9a7655b7a1824"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-613"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24896.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-24896",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 499910,
  "published_at": "2025-02-11T15:14:09.305+00:00"
}