Incorrect authorization in Parse Server - CVE-2026-30947
Published: April 6, 2026
Vulnerability identifier: #VU124989
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-30947
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Parse Community
Affected software:
Parse Server
Parse Server
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper access control in LiveQuery subscriptions when handling subscription requests and event delivery. A remote attacker can subscribe to a LiveQuery-enabled class without authorization checks to disclose sensitive information.
Data restricted by class-level permissions can be leaked to unauthorized subscribers in real time.
How to mitigate CVE-2026-30947
Install security update from vendor's website.