{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:bitwarden:server:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2026.4.1"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3371bb6144772fb4b6f78a88ba065eef975f19cc"
            },
            {
              "fixed": "ebbf6dd0fa752114c09d73abb48ce32a50476758"
            }
          ],
          "repo": "https://github.com/bitwarden/server",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43638.json"
  },
  "details": "Bitwarden Server prior to v2026.4.1 contains a missing authorization vulnerability that allows any authenticated user to write ciphers into an arbitrary organization via `POST /ciphers/import-organization` by submitting an empty `collections` array, which causes the server-side permission check to be skipped.",
  "id": "CVE-2026-43638",
  "modified": "2026-07-15T01:49:15.126761853Z",
  "published": "2026-05-11T17:13:31.801Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43638.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/bitwarden/server/releases/tag/v2026.4.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43638"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/bitwarden-server-missing-authorization-via-organization-cipher-import"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/bitwarden/server/pull/7394"
    },
    {
      "type": "FIX",
      "url": "https://github.com/bitwarden/server/commit/ebbf6dd0fa752114c09d73abb48ce32a50476758"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/bitwarden/server"
    },
    {
      "type": "EVIDENCE",
      "url": "https://sanjokkarki.com.np/blog/bitwarden-import-org-bypass"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Bitwarden Server \u003c 2026.4.1 Missing Authorization via Organization Cipher Import"
}