Vulnerability · Published Mar 13, 2026 · Assigned by GitHub_M
CVE-2026-32594Parse Server GraphQL WebSocket endpoint bypasses security middleware
Medium 6.9
In plain English
A medium-severity missing authentication in parse-server from parse-community. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | parse-server | 9.6.0-alpha.14 | GHSA-p2x3-8689-cwpg |
| npm | parse-server | 8.6.40 | GHSA-p2x3-8689-cwpg |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| parse-community | parse-server | >= 9.0.0 < 9.6.0-alpha.14< 8.6.40 |
Weakness: CWE-306 · Vector: 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
References
- https://github.com/parse-community/parse-server/security/advisories/GHSA-p2x3-8689-cwpg x_refsource_CONFIRM
- https://github.com/parse-community/parse-server/pull/10189 x_refsource_MISC
- https://github.com/parse-community/parse-server/pull/10190 x_refsource_MISC