CVE-2026-30946
Parse Server affected by denial-of-service via unbounded query complexity in REST and GraphQL API
EPSS 0.56%
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior 9.5.2 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 and 8.6.15.
How to fix CVE-2026-30946
To remediate CVE-2026-30946, upgrade the affected package to a fixed version below.
- —upgrade to 8.6.15 or later
- —upgrade to 8.6.15 or later
Is CVE-2026-30946 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 8.6.15, >= 9.0.0, < 9.5.2
- from 0, < 8.6.15
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |