CVE-2026-32944
highpriority · track · 30EPSS 0.005 · 43 %ileEUUSEPSS · scored 2026-10-27
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 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. Starting in version 9.6.0-alpha.21 and 8.6.45, 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. No known workarounds are available.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (9)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-9xp9-j92r-p88vParse Server crash via deeply nested query condition operators2026-03-17ghsa · osvUS
### 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.
- BIT-parse-2026-32944Parse Server crash via deeply nested query condition operators2026-03-20vendor · osvUS
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0 and 8.6.45, 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. Starting in version 9.6.0 and 8.6.45, 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. No known workarounds are available.
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://github.com/parse-community/parse-server/pull/10202cnnvd
- https://github.com/parse-community/parse-server/pull/10203cnnvd
- https://github.com/parse-community/parse-server/releasesPatchcnnvd
- https://github.com/parse-community/parse-server/security/advisories/GHSA-9xp9-j92r-p88vcnnvd
- https://github.com/parse-community/parse-server/pull/10202enisa_euvd
- https://github.com/parse-community/parse-server/pull/10203enisa_euvd
- https://github.com/parse-community/parse-server/security/advisories/GHSA-9xp9-j92r-p88venisa_euvd
- https://github.com/parse-community/parse-server/pull/10202Issue Trackingnvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan