{"id":"CVE-2026-126571","summary":"Padloc 4.0.0 before 4.3.1 Email MFA Code Brute Force via retrieveMFAToken","details":"Padloc 4.0.0 before 4.3.1 contains an authentication bypass vulnerability in the legacy retrieveMFAToken handler that never counts wrong email verification codes toward the attempt limit. Unauthenticated attackers knowing a victim's email can brute force the 6-digit code to obtain verification tokens usable in signup, login and account recovery flows.","aliases":["GHSA-3mq5-m2qg-fqhq"],"modified":"2026-11-12T02:48:34.499752088Z","published":"2026-11-11T02:36:06.963Z","database_specific":{"cwe_ids":["CWE-307"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126571.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126571.json"},{"type":"ADVISORY","url":"https://github.com/padloc/padloc/security/advisories/GHSA-3mq5-m2qg-fqhq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126571"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/padloc-4.0.0-before-4.3.1-email-mfa-code-brute-force-via-retrievemfatoken"},{"type":"FIX","url":"https://github.com/padloc/padloc/commit/26f292515fe623826070454872f9cee08b756544"},{"type":"PACKAGE","url":"https://github.com/padloc/padloc"},{"type":"ARTICLE","url":"https://github.com/padloc/padloc/blob/v4.3.0/packages/core/src/v3-compat.ts#L191-L210"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/padloc/padloc","events":[{"introduced":"5af036079de201e966882368f00cf8e1da91f3aa"},{"fixed":"3288ce48034ded2a31be03805b607e8f708416df"},{"fixed":"26f292515fe623826070454872f9cee08b756544"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"4.0.0"},{"fixed":"4.3.1"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"},{"range":[{"fixed":"26f292515fe623826070454872f9cee08b756544"}],"source":"REFERENCES_COMMIT"}]}}],"versions":["padloc-staging-channel","v4.3.0","v4.2.0","v4.1.0","v4.0.2","v4.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126571.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"}]}