CVE-2026-30966
CVE-2026-30966 · Parse Server role escalation and CLP bypass via direct `_Join` table write
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.7 and 8.6.20, Parse Server's internal tables, which store Relation field mappings such as role memberships, can be directly accessed via the REST API or GraphQL API by any client using only the application key. No master key is required. An attacker can create, read, update, or delete records in any internal relationship table. Exploiting this allows the attacker to inject themselves into any Parse Role, gaining all permissions associated with that role, including full read, write, and delete access to classes protected by role-based Class-Level Permissions (CLP). Similarly, writing to any such table that backs a Relation field used in a pointerFields CLP bypasses that access control. This vulnerability is fixed in 9.5.2-alpha.7 and 8.6.20.
CVSS 10.0 · Critical · EPSS 0.5% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
parse-server
- Versions
- >= 9.0.0 < 9.5.2-alpha.7: Affected
- < 8.6.20: Affected
No fix published
parse-server npm
- Affected ranges
- SEMVER: ≥ 9.0.0-alpha.1, < 9.5.2-alpha.7
Update to 9.5.2-alpha.7
parse-server npm
- Affected ranges
- SEMVER: < 8.6.20
Update to 8.6.20