High severity · published Mar 13, 2026
CVE-2026-32594
Parse Server GraphQL WebSocket endpoint bypasses security middleware
7.3
CVSS
0.4%
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 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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% 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.14; < 8.6.40 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-32594
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-32594
Issue Tracking
https://github.com/parse-community/parse-server/pull/10189
Issue Tracking
https://github.com/parse-community/parse-server/pull/10190
Mitigation
https://github.com/parse-community/parse-server/security/advisories/GHSA-p2x3-8689-cwpg
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