CVE-2026-32594

Parse Server GraphQL WebSocket endpoint bypasses security middleware

CVSS 6.9 MEDIUMEPSS 0.3%CWE-306

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.9EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

13 Mar 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.40 and 9.6.0-alpha.14, the GraphQL WebSocket endpoint for subscriptions does not pass requests through the Express middleware chain that enforces authentication, introspection control, and query complexity limits. An attacker can connect to the WebSocket endpoint and execute GraphQL operations without providing a valid application or API key, access the GraphQL schema via introspection even when public introspection is disabled, and send arbitrarily complex queries that bypass configured complexity limits. This vulnerability is fixed in 8.6.40 and 9.6.0-alpha.14.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

Affected products

parse-community · parse-server

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References

https://github.com/parse-community/parse-server/pull/10189 https://github.com/parse-community/parse-server/pull/10190 https://github.com/parse-community/parse-server/security/advisories/GHSA-p2x3-8689-cwpg