{"id":"CVE-2026-43640","aliases":["EUVD-2026-29171","GHSA-6736-x63f-c628"],"status":"published","title":"Bitwarden Server \u003c 2026.4.1 Authentication Bypass via SCIM API Key","description":"Bitwarden Server prior to v2026.4.1 does not require master-password re-authentication when retrieving or rotating an organization's SCIM API key, allowing an authenticated user with SCIM management privileges to obtain the key using only a valid session.","severity":{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00504,"percentile":0.43409,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-303"],"published":"2026-05-11T17:14:37Z","modified":"2026-11-09T02:47:20Z","products":[{"vendor":"bitwarden","product":"server"},{"vendor":"devolutions","product":"server"}],"references":[{"url":"https://sanjokkarki.com.np/blog/bitwarden-scim-key-bypass","tags":["technical-description","exploit","Exploit","Third Party Advisory","evidence"]},{"url":"https://github.com/bitwarden/server/releases/tag/v2026.4.1","tags":["release-notes","Release Notes","advisory"]},{"url":"https://github.com/bitwarden/server/pull/7403","tags":["issue-tracking","patch","Issue Tracking","Patch","fix"]},{"url":"https://github.com/bitwarden/server/commit/eb251d9bf80724c87b187661783b9354d1784083","tags":["patch","Patch","fix"]},{"url":"https://www.vulncheck.com/advisories/bitwarden-server-authentication-bypass-via-scim-api-key","tags":["third-party-advisory","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43640","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-6736-x63f-c628"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43640.json","tags":["advisory"]},{"url":"https://github.com/bitwarden/server","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-43640","title":"Bitwarden Server \u003c 2026.4.1 Authentication Bypass via SCIM API Key","description":"Bitwarden Server prior to v2026.4.1 does not require master-password re-authentication when retrieving or rotating an organization's SCIM API key, allowing an authenticated user with SCIM management privileges to obtain 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