Improper Authentication in Parse Server - CVE-2026-30949
Published: April 6, 2026
Vulnerability identifier: #VU124991
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-30949
CWE-ID: CWE-287
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 user to authenticate as any user.
The vulnerability exists due to improper authentication in the Keycloak authentication adapter when validating Keycloak access tokens. A remote user can present a valid access token issued for a different client application in the same Keycloak realm to authenticate as any user.
Only deployments that use the Keycloak authentication adapter with a Keycloak realm containing multiple client applications are vulnerable.
How to mitigate CVE-2026-30949
Install security update from vendor's website.