Uncontrolled Recursion in Parse Server - CVE-2026-33498
Published: April 6, 2026
Vulnerability identifier: #VU125006
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-33498
CWE-ID: CWE-674
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 attacker to cause a denial of service.
The vulnerability exists due to uncontrolled recursion in the pre-validation transform pipeline when processing a deeply nested query containing logical operators. A remote attacker can send a specially crafted unauthenticated HTTP request to cause a denial of service.
The Parse Server process can become permanently unresponsive and require manual restart.
How to mitigate CVE-2026-33498
Install security update from vendor's website.