Uncontrolled Recursion Affecting parse-server package, versions <8.6.56>=9.0.0 <9.6.0-alpha.45
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Test your applications- Snyk IDSNYK-JS-PARSESERVER-15757707
- published23 Mar 2026
- disclosed20 Mar 2026
- creditMithun M
Introduced: 20 Mar 2026
NewCVE-2026-33508 (opens in a new tab)How to fix?
Upgrade parse-server to version 8.6.56, 9.6.0-alpha.45 or higher.
Overview
parse-server is a version of the Parse backend that can be deployed to any infrastructure that can run Node.js.
Affected versions of this package are vulnerable to Uncontrolled Recursion via the requestComplexity.queryDepth configuration setting when processing WebSocket subscription requests. An attacker can cause excessive recursion and CPU consumption by sending a subscription with deeply nested logical operators, potentially degrading or disrupting service availability.
Note: This is only exploitable if the LiveQuery WebSocket endpoint is accessible to untrusted clients.