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.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.
Scores
CVSS v3
7.5
EPSS
0.0002
EPSS Percentile
4.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-863
Status
published
Products (3)
npm/parse-server
9.0.0 - 9.5.2-alpha.3npm
parseplatform/parse-server
9.5.2 alpha1 (2 CPE variants)
parseplatform/parse-server
< 8.6.16
Published
Mar 10, 2026
Tracked Since
Mar 11, 2026