{"id":"CVE-2026-53725","aliases":["BIT-parse-2026-53725","GHSA-75v4-m273-5j49"],"url":"https://o3.security/vulnerability/CVE-2026-53725","summary":"Parse Server: Endpoints `/login` and `/verifyPassword` disclose MFA secrets and protected fields when `_User` get is denied","details":"### Impact\n\nApps that enable MFA and deny `get` on the `_User` class via Class-Level Permissions could expose sensitive user data through the `/login` and `/verifyPassword` endpoints.\n\nThese endpoints re-fetch the user through the access-controlled query pipeline (CLP, `protectedFields`, auth-adapter sanitizers) before responding. When that re-fetch was denied by the `_User` `get` permission, the server fell back to the raw database row, exposing raw `authData` (including MFA TOTP secrets and recovery codes) and fields hidden by `protectedFields` (when `protectedFieldsOwnerExempt` is `false`).\n\n`/verifyPassword` is the most severe: with only a username and password (no session or MFA token), an attacker who knows a victim's password could retrieve their MFA secret and recovery codes, defeating the second factor.\n\nOnly Parse Server 9.8.0 and later are affected; 8.x and earlier are not. Master and maintenance key requests are unaffected, as they bypass these controls by design.\n\n### Patches\n\nOn a denied re-fetch, `/login` and `/verifyPassword` no longer fall back to the raw row; they return only the user's identity (plus the session token for `/login`). Master and maintenance key callers still receive the full record.\n\n### Workarounds\n\nNone that preserve the intended `_User` `get` restriction. Upgrade to a patched version.","published":"2026-06-12T18:35:45.906Z","modified":"2026-10-21T02:58:30.096030680Z","cvss":null,"epss":{"score":0.00252,"percentile":0.16677,"asOf":"2026-09-12"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"parse-server","fixedVersion":"9.9.1-alpha.5"}],"fix":{"url":"https://github.com/parse-community/parse-server/pull/10492","label":"parse-community/parse-server#10492"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53725.json"},{"type":"ADVISORY","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-75v4-m273-5j49"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53725"},{"type":"FIX","url":"https://github.com/parse-community/parse-server/pull/10492"},{"type":"PACKAGE","url":"https://github.com/parse-community/parse-server"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:58:30.096030680Z"}}