Missing Authentication for Critical Function Affecting strawberry-graphql package, versions [,0.312.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PYTHON-STRAWBERRYGRAPHQL-15922312
- published7 Apr 2026
- disclosed6 Apr 2026
- creditJeremy Katz, Wes Ring
Introduced: 6 Apr 2026
NewCVE-2026-35523 (opens in a new tab)How to fix?
Upgrade strawberry-graphql to version 0.312.3 or higher.
Overview
strawberry-graphql is an A library for creating GraphQL APIs
Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the on_ws_connect process. An attacker can gain unauthorized access to WebSocket subscription endpoints by connecting with the legacy graphql-ws subprotocol and sending a start message directly, bypassing the required authentication handshake.
Note:
This is only exploitable if the application relies on on_ws_connect for authentication or authorization.
Workaround
This vulnerability can be mitigated by explicitly disabling the legacy graphql-ws subprotocol by setting subscription_protocols=[GRAPHQL_TRANSPORT_WS_PROTOCOL] on the GraphQL view or router.