vulnerability / NVI-00012957 / Revision 2
Parse Server's GraphQL WebSocket endpoint bypasses security middleware
GitHub lists this reviewed advisory for parse-server, parse-server. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
7.3 HIGH (3.1)
nvd@nist.gov severity; no combined Null risk score.
6.9 MEDIUM (4.0)
security-advisories@github.com severity; no combined Null risk score.
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
parse-server
source listed>= 9.0.0, < 9.6.0-alpha.14
### Impact Any Parse Server deployment that uses the GraphQL API is affected. 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. ### Patches The unfinished GraphQL WebSocket subscription feature has been removed, including the `createSubscriptions` method and the `subscriptions-transport-ws` dependency. GraphQL subscriptions were never functional in Parse Server as the schema did not define any subscription types. ### Workarounds Block WebSocket upgrade requests to the GraphQL subscriptions path (by default `/subscriptions`) at the network level, for example using a reverse proxy or load balancer rule.
parse-server
source listed< 8.6.40
### Impact Any Parse Server deployment that uses the GraphQL API is affected. 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. ### Patches The unfinished GraphQL WebSocket subscription feature has been removed, including the `createSubscriptions` method and the `subscriptions-transport-ws` dependency. GraphQL subscriptions were never functional in Parse Server as the schema did not define any subscription types. ### Workarounds Block WebSocket upgrade requests to the GraphQL subscriptions path (by default `/subscriptions`) at the network level, for example using a reverse proxy or load balancer rule.
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. NIST National Vulnerability Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
- NVD lastModified does not establish freshness of every associated CPE record.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-p2x3-8689-cwpg ↗
GitHub Advisory Database · vendor advisory
Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.
- CVE-2026-32594 ↗
NIST National Vulnerability Database · official catalog
Observed . This product uses data from the NVD API but is not endorsed or certified by the NVD.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 2 ·
Source facts changed; compare the preserved prior revision.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.