Improper Authentication in Parse Server - CVE-2026-33409
Published: March 20, 2026
Vulnerability identifier: #VU124161
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-33409
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 bypass authentication process.
The vulnerability exists due to improper authentication when the server option "allowExpiredAuthDataToken" is set to true. A remote administrator can bypass authentication process and gain unauthorized access to the application.
How to mitigate CVE-2026-33409
Install updates from vendor's website.