CVE-2026-30947

EUVD-2026-10864
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
parseplatformparse-server
𝑥
< 8.6.16
parseplatformparse-server
9.0.0 ≤
𝑥
< 9.5.2
parseplatformparse-server
9.5.2:alpha1
parseplatformparse-server
9.5.2:alpha2
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
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
https://github.com/parse-community/parse-server/security/advisories/GHSA-7ch5-98q2-7289