SB2026040785 - Incorrect authorization in Parse Server

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Main Vulnerability Database SB2026040785

SB2026040785 - Incorrect authorization in Parse Server

Published: April 7, 2026

Security Bulletin ID SB2026040785
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Incorrect authorization (CVE-ID: CVE-2026-30229)

CWE-ID: CWE-863 - Incorrect Authorization

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


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.

References