CVE-2026-57480: Parse-Community Parse-Server

High severity, CVSS 8.7. EPSS: 0.6% chance of exploitation in the next 30 days.

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.9.1-alpha.12 and 8.6.82, deeply nested $or, $and, and $nor query condition operators in the REST API or LiveQuery query handling could trigger exponential-time processing in the internal query-traversal helper and block the Node.js event loop. This issue is fixed in versions 9.9.1-alpha.12 and 8.6.82.

Affected products

• Parse-Community Parse-Server: from 9.0.0-alpha.1, before 9.9.1-alpha.12 (fixed in 9.9.1-alpha.12); before 8.6.82 (fixed in 8.6.82)

Published 2026-07-08. Last modified 2026-07-10.