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High severity · published Mar 10, 2026
CVE-2026-30946
Parse Server affected by denial-of-service via unbounded query complexity in REST and GraphQL API
7.5
CVSS
0.6%
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 9.5.2-alpha.2 and 8.6.15, an unauthenticated attacker can exhaust Parse Server resources (CPU, memory, database connections) through crafted queries that exploit the lack of complexity limits in the REST and GraphQL APIs. All Parse Server deployments using the REST or GraphQL API are affected. This vulnerability is fixed in 9.5.2-alpha.2 and 8.6.15.
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)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
parse-server · parse-community
< 8.6.15; >= 9.0.0 < 9.5.2-alpha.2 · source: vendor, NVD
Affected product
PA
parse-server
parse-community
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-30946
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-30946
Product
https://github.com/parse-community/parse-server/releases/tag/8.6.15
Product
https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.2
Patch
https://github.com/parse-community/parse-server/security/advisories/GHSA-cmj3-wx7h-ffvg
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