GHSA-75v4-m273-5j49

Description

### Impact Apps 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. These 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`). `/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. Only 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. ### Patches On 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. ### Workarounds None that preserve the intended `_User` `get` restriction. Upgrade to a patched version.