CVE-2026-30947 PUBLISHED

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.3 and 8.6.16, class-level permissions (CLP) are not enforced for LiveQuery subscriptions. An unauthenticated or unauthorized client can subscribe to any LiveQuery-enabled class and receive real-time events for all objects, regardless of CLP restrictions. All Parse Server deployments that use LiveQuery with class-level permissions are affected. Data intended to be restricted by CLP is leaked to unauthorized subscribers in real time. This vulnerability is fixed in 9.5.2-alpha.3 and 8.6.16.

• https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289
• https://github.com/parse-community/parse-server/releases/tag/8.6.16
• https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.3

• CWE-863: Incorrect Authorization CWE