SB2026040764 - Improper Authentication in Parse Server
Published: April 7, 2026
Security Bulletin ID
SB2026040764
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Authentication (CVE-ID: CVE-2026-30949)
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.
Remediation
Install update from vendor's website.