Incorrect authorization in Parse Server - CVE-2026-50008
Published: June 30, 2026
Vulnerability identifier: #VU135967
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-50008
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass route-based access restrictions.
The vulnerability exists due to improper access control in the /batch handler when processing batch sub-requests. A remote attacker can send a specially crafted batch request to bypass route-based access restrictions.
Only deployments that enable routeAllowList and allow access to the batch route are affected. Inner-route authentication, ACL, and CLP checks still apply.
Affected software
Parse Server
How to mitigate CVE-2026-50008
Install security update from vendor's website.
Parse Server - update to 9.9.1 alpha.3