CVE-2026-30966
CRITICAL
GHSA-5f92-jrq3-28rc
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
Lifecycle Timeline
3Tags
Description
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.
Analysis
Parse Server has a CVSS 10.0 access control vulnerability enabling complete bypass of all data access restrictions.
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Remediation
Within 24 hours: Inventory all Parse Server instances across production and non-production environments and assess exposure. Within 7 days: Apply the available vendor patch to all identified instances, prioritizing production systems, and validate patch deployment. …
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External POC / Exploit Code
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