SB2026063052 - Inefficient Algorithmic Complexity in Parse Server

Description

This security bulletin contains information about 1 vulnerability.

1) Inefficient Algorithmic Complexity (CVE-ID: CVE-2026-57480)

CWE-ID: CWE-407 - Inefficient Algorithmic Complexity

CVSSv4: 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

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to inefficient algorithmic complexity in query handling when processing deeply nested query condition operators. A remote attacker can send a small crafted query to cause a denial of service.

The issue affects REST API and LiveQuery query handling and is reachable in the default configuration. No user authentication is required, and a single request can block the Node.js event loop for many seconds.

Remediation

Install update from vendor's website.

References

• https://github.com/parse-community/parse-server/security/advisories/GHSA-cgxm-vr2f-6fj8
• https://github.com/parse-community/parse-server/pull/10511