CVE-2026-33538 Parse Server: Denial of service via unindexed database query for unconfigured auth providers

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.58 and 9.6.0-alpha.52, an unauthenticated attacker can cause denial of service by sending authentication requests with arbitrary, unconfigured provider names. The server...

CVE-2026-33538 Parse Server: Denial of service via unindexed database query for unconfigured auth providers

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.58 and 9.6.0-alpha.52, an unauthenticated attacker can cause denial of service by sending authentication requests with arbitrary, unconfigured provider names. The server...

CVE-2026-33538

Parse Server v8.6.58 and v9.6.0-alpha.52 patch CVE-2026-33538, which allowed unauthenticated attackers to trigger DoS by sending auth requests for unconfigured providers. The server queries the user database for each unconfigured provider, and without an index on unconfigured providers this cause...

CVE-2026-33538 Parse Server: Denial of service via unindexed database query for unconfigured auth providers

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.58 and 9.6.0-alpha.52, an unauthenticated attacker can cause denial of service by sending authentication requests with arbitrary, unconfigured provider names. The server...