{"id":"CVE-2026-47164","state":"PUBLISHED","title":"Vaultwarden: SSO Email Auto-Link Can Bind an Existing Local Account to an Attacker-Controlled IdP Identity","description":"Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO login flow checked the IdP email_verified claim only for new-user creation and not when SSO_SIGNUPS_MATCH_EMAIL=true linked an IdP identity to an existing local account, allowing an attacker-controlled IdP identity asserting a victim email address to bind to and authenticate as that account. This issue is fixed in version 1.36.0.","publishedAt":"2026-07-15T15:03:22.800Z","updatedAt":"2026-07-15T15:41:17.392Z","severity":{"score":7.7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["dani-garcia vaultwarden"],"affected":[{"vendor":"dani-garcia","product":"vaultwarden","versions":[{"version":"< 1.36.0","status":"affected"}]}],"references":["https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-6x5c-84vm-5j56","https://github.com/dani-garcia/vaultwarden/pull/7163","https://github.com/dani-garcia/vaultwarden/commit/d297e274a35dccd0f5d935e9d5934e0f7e9c0a87","https://github.com/dani-garcia/vaultwarden/releases/tag/1.36.0"],"weaknesses":["CWE-284"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/47xxx/CVE-2026-47164.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-47164","state":"PUBLISHED","datePublished":"2026-07-15T15:03:22.800Z","dateUpdated":"2026-07-15T15:41:17.392Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-18T21:25:34.496Z"},"containers":{"cna":{"title":"Vaultwarden: SSO Email Auto-Link Can Bind an Existing Local Account to an Attacker-Controlled IdP Identity","descriptions":[{"lang":"en","value":"Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO login flow checked the IdP email_verified claim only for new-user creation and not when SSO_SIGNUPS_MATCH_EMAIL=true linked an IdP identity to an existing local account, allowing an attacker-controlled IdP identity asserting a victim email address to bind to and authenticate as that account. This issue is fixed in version 1.36.0."}],"affected":[{"vendor":"dani-garcia","product":"vaultwarden","versions":[{"version":"< 1.36.0","status":"affected"}]}],"references":[{"url":"https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-6x5c-84vm-5j56","name":"https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-6x5c-84vm-5j56","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/dani-garcia/vaultwarden/pull/7163","name":"https://github.com/dani-garcia/vaultwarden/pull/7163","tags":["x_refsource_MISC"]},{"url":"https://github.com/dani-garcia/vaultwarden/commit/d297e274a35dccd0f5d935e9d5934e0f7e9c0a87","name":"https://github.com/dani-garcia/vaultwarden/commit/d297e274a35dccd0f5d935e9d5934e0f7e9c0a87","tags":["x_refsource_MISC"]},{"url":"https://github.com/dani-garcia/vaultwarden/releases/tag/1.36.0","name":"https://github.com/dani-garcia/vaultwarden/releases/tag/1.36.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-284","lang":"en","description":"CWE-284: Improper Access Control","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-15T15:03:22.800Z"},"source":{"advisory":"GHSA-6x5c-84vm-5j56","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T15:41:01.104026Z","id":"CVE-2026-47164","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-15T15:41:17.392Z"}}]}}}