Inefficient Algorithmic Complexity in Parse Server - CVE-2026-34573
Published: March 30, 2026 / Updated: April 6, 2026
Vulnerability identifier: #VU124675
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-34573
CWE-ID: CWE-407
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to inefficient algorithmic complexity within the GraphQL query complexity validator. A remote attacker can cause a denial of service condition on the target system.
Affected software
Parse Server
How to mitigate CVE-2026-34573
Install updates from vendor's website.
Parse Server - addressed in versions 8.6.68, 9.7.0 alpha.12