parse-community/parse-server 8.6.24

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Warning

Parse Server now automatically creates unique indexes on authData fields for each configured authentication provider on startup, including anonymous when anonymous users are enabled. These indexes prevent concurrent signups from creating duplicate user accounts with the same authentication identity. If the indexes already exist, no action is taken. Without these indexes, concurrent signup requests with the same authData can bypass the application-level uniqueness check and create duplicate user accounts, which prevents subsequent login for the affected accounts. To skip automatic index creation, set the createIndexAuthDataUniqueness database option to false. If duplicate authData entries already exist in the database, a warning is logged at startup and the index is not created; the duplicates need to be resolved manually before the index can be created.