High severity · published Mar 18, 2026
CVE-2026-32944
Parse Server crash via deeply nested query condition operators
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
parse-server · parse-community
>= 9.0.0, < 9.6.0-alpha.21; < 8.6.45 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-32944
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-32944
Issue Tracking
https://github.com/parse-community/parse-server/pull/10202
Issue Tracking
https://github.com/parse-community/parse-server/pull/10203
Vendor Advisory
https://github.com/parse-community/parse-server/security/advisories/GHSA-9xp9-j92r-p88v
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