{"id":"CVE-2026-27801","state":"PUBLISHED","title":"Vaultwarden: 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement","description":"Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Vaultwarden versions 1.34.3 and prior are susceptible to a 2FA bypass when performing protected actions. An attacker who gains authenticated access to a user’s account can exploit this bypass to perform protected actions such as accessing the user’s API key or deleting the user’s vault and organisations the user is an admin/owner of . This issue has been patched in version 1.35.0.","publishedAt":"2026-03-04T21:32:14.614Z","updatedAt":"2026-03-05T15:30:50.274Z","severity":{"score":6,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["dani-garcia vaultwarden"],"affected":[{"vendor":"dani-garcia","product":"vaultwarden","versions":[{"version":"< 1.35.0","status":"affected"}]}],"references":["https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-v6pg-v89r-w8wr"],"weaknesses":["CWE-307"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/27xxx/CVE-2026-27801.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-27801","state":"PUBLISHED","datePublished":"2026-03-04T21:32:14.614Z","dateUpdated":"2026-03-05T15:30:50.274Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-02-24T02:31:33.266Z"},"containers":{"cna":{"title":"Vaultwarden: 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement","descriptions":[{"lang":"en","value":"Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Vaultwarden versions 1.34.3 and prior are susceptible to a 2FA bypass when performing protected actions. An attacker who gains authenticated access to a user’s account can exploit this bypass to perform protected actions such as accessing the user’s API key or deleting the user’s vault and organisations the user is an admin/owner of . This issue has been patched in version 1.35.0."}],"affected":[{"vendor":"dani-garcia","product":"vaultwarden","versions":[{"version":"< 1.35.0","status":"affected"}]}],"references":[{"url":"https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-v6pg-v89r-w8wr","name":"https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-v6pg-v89r-w8wr","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-307","lang":"en","description":"CWE-307: Improper Restriction of Excessive Authentication Attempts","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-04T21:32:14.614Z"},"source":{"advisory":"GHSA-v6pg-v89r-w8wr","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-v6pg-v89r-w8wr","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-05T15:30:47.611803Z","id":"CVE-2026-27801","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-05T15:30:50.274Z"}}]}}}