CVE-2026-32594
March 13, 2026
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.
Affected Packages
https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=2.0.0 <8.6.40Fix Suggestion:
Update to version 8.6.40https://github.com/parse-community/parse-server.git (GITHUB):
Affected version(s) >=9.0.0 <9.6.0-alpha.14Fix Suggestion:
Update to version 9.6.0-alpha.14parse-server (NPM):
Affected version(s) >=1.0.0 <8.6.40Fix Suggestion:
Update to version 8.6.40parse-server (NPM):
Affected version(s) >=9.0.0 <9.6.0-alpha.14Fix Suggestion:
Update to version 9.6.0-alpha.14Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Missing Authentication for Critical Function
EPSS
Base Score:
0.07
