Vulnerability details

CVE-2026-30946

parse-community parse-server

Parse Server affected by denial-of-service via unbounded query complexity in REST and GraphQL API

CVSS 4.0

8.7High

Official 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 scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`

Affected products

Vendor	Product	Versions	Source
parse-community	parse-server	< 8.6.15	CVEProject cvelistV5 (CNA)
parse-community	parse-server	>= 9.0.0 < 9.5.2-alpha.2	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/parse-community/parse-server/security/advisories/GHSA-cmj3-wx7h-ffvg x_refsource_CONFIRM
https://github.com/parse-community/parse-server/releases/tag/8.6.15 x_refsource_MISC
https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.2 x_refsource_MISC

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Details

Published: 2026-03-10
Last updated: 2026-03-11
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.62%

Probability of exploitation in 30 days

49.9%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-770
Allocation of Resources Without Limits or Throttling