Parse Server GraphQL WebSocket endpoint bypasses security middleware
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-32594
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 10:54 UTC · Revision 1
Source evidence
Parse Server GraphQL WebSocket endpoint bypasses security middleware
core-osv · Original sourcePublished 13 Mar 2026, 19:56 UTC
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.
osv:CVE-2026-32594
Complete source record
{
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"url": "https://osv.dev/vulnerability/CVE-2026-32594",
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"title": "Parse Server GraphQL WebSocket endpoint bypasses security middleware",
"summary": "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.",
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"modified": "2026-10-28T02:30:28.178321945Z",
"provider": "osv",
"references": [
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"https://github.com/parse-community/parse-server/security/advisories/GHSA-p2x3-8689-cwpg",
"https://nvd.nist.gov/vuln/detail/CVE-2026-32594",
"https://github.com/parse-community/parse-server/pull/10189",
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"source": "AFFECTED_FIELD",
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"source_id": "core-osv",
"document_id": 494772,
"published_at": "2026-03-13T19:56:42.155+00:00"
}