Security Advisory

CVE-2026-33508

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-03-24 18:21:08

Last updated 2026-03-25 14:28:29

Assigner GitHub_M

CVSS score 8.2

State PUBLISHED

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.56 and 9.6.0-alpha.45, Parse Server's LiveQuery component does not enforce the requestComplexity.queryDepth configuration setting when processing WebSocket subscription requests. An attacker can send a subscription with deeply nested logical operators, causing excessive recursion and CPU consumption that degrades or disrupts service availability. This issue has been patched in versions 8.6.56 and 9.6.0-alpha.45.

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