Parse Server crash via deeply nested query condition operators
### Impact An unauthenticated attacker can crash the Parse Server process by sending a single request with deeply nested query condition operators. This terminates the server and denies service to all connected clients. ### Patches A depth limit for query condition operator nesting has been added via the `requestComplexity.queryDepth` server option. The option is disabled by default to avoid a breaking change. To mitigate, upgrade and set the option to a value appropriate for your app. ### Workarounds None.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-32944US | high7.5 | — | ||
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.21 and 8.6.45, an unauthenticated attacker can crash th… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/parse-community/parse-serverPACKAGE
- https://github.com/parse-community/parse-server/pull/10202WEB
- https://github.com/parse-community/parse-server/pull/10203WEB
- https://github.com/parse-community/parse-server/security/advisories/GHSA-9xp9-j92r-p88vWEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-32944ADVISORY
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan