Parse Server ha a bypass of class-level permissions in LiveQuery
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2 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 and 8.6.16.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-30947US | high7.5OT elevated | — | ||
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 enf… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/parse-community/parse-server/releases/tag/8.6.16ARTICLE
- https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.3ARTICLE
- https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289ADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2026-30947WEB
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