SB2026040785 - Incorrect authorization in Parse Server
Published: April 7, 2026
Security Bulletin ID
SB2026040785
Severity
Low
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) Incorrect authorization (CVE-ID: CVE-2026-30229)
The vulnerability allows a remote user to obtain full read and write access as any user.
The vulnerability exists due to incorrect authorization in the /loginAs endpoint when handling POST /loginAs requests with readOnlyMasterKey credentials. A remote privileged user can send a crafted request to obtain a valid session token for any user to obtain full read and write access as any user.
Only deployments that use readOnlyMasterKey are vulnerable.
Remediation
Install update from vendor's website.