Vaultwarden: Refresh tokens not invalidated on security stamp rotation

{
  "id": "307aa84eaa235fd3a1acdbfc7a77d94c2bf88aa9a3cb5b7db282def832178c78",
  "url": "https://osv.dev/vulnerability/CVE-2026-43911",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Vaultwarden: Refresh tokens not invalidated on security stamp rotation",
    "summary": "Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.35.5, refresh tokens are not invalidated when the user's security_stamp is rotated by some security-sensitive operations (password change, KDF change, key rotation, email change, org admin password reset, emergency access takeover). This allows an attacker holding a previously obtained refresh token to maintain session access even after the user has taken action to secure their account. This vulnerability is fixed in 1.35.5.",
    "evidence": "osv:CVE-2026-43911",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-43911",
      "aliases": [
        "CVE-2026-43911",
        "GHSA-6j4w-g4jh-xjfx"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dani-garcia/vaultwarden",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "39954af96aff8eb70eb4d26969abc1458bc4804f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.35.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:dani-garcia:vaultwarden:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.35.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.35.4",
            "1.35.3",
            "1.35.2",
            "1.35.1",
            "1.35.0",
            "1.34.3",
            "1.34.2",
            "1.34.1",
            "1.34.0",
            "1.33.2",
            "1.33.1",
            "1.33.0",
            "1.32.7",
            "1.32.6",
            "1.32.5",
            "1.32.4",
            "1.32.3",
            "1.32.2",
            "1.32.1",
            "1.32.0",
            "1.31.0",
            "1.30.5",
            "1.30.4",
            "1.30.3",
            "1.30.2",
            "1.30.1",
            "1.30.0",
            "1.29.2",
            "1.29.1",
            "1.29.0",
            "1.28.1",
            "1.28.0",
            "1.27.0",
            "1.26.0",
            "1.25.2",
            "1.25.1",
            "1.25.0",
            "1.24.0",
            "1.23.1",
            "1.23.0",
            "1.22.2",
            "1.22.1",
            "1.22.0",
            "1.21.0",
            "1.20.0",
            "1.19.0",
            "1.18.0",
            "1.17.0",
            "1.16.3",
            "1.16.2",
            "1.16.1",
            "1.16.0",
            "1.15.1",
            "1.15.0",
            "1.14.2",
            "1.14.1",
            "1.14",
            "1.13.1",
            "1.13.0",
            "1.12.0",
            "1.11.0",
            "1.10.0",
            "1.9.1",
            "1.9.0",
            "1.8.0",
            "1.7.0",
            "1.6.1",
            "1.6.0",
            "1.5.0",
            "1.4.0",
            "1.3.0",
            "1.2.0",
            "1.1.0",
            "1.0.0",
            "0.13.0",
            "0.12.0",
            "0.11.0",
            "0.10.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43911.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.131173655Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43911.json",
        "https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-6j4w-g4jh-xjfx",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-43911"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-613"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43911.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-43911",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488205,
  "published_at": "2026-05-11T21:54:41.074+00:00"
}