CVE-2026-35523 Authentication bypass in strawberry-graphql via legacy graphql-ws WebSocket subprotocol

Strawberry GraphQL is a library for creating GraphQL APIs. Strawberry up until version 0.312.3 is vulnerable to an authentication bypass on WebSocket subscription endpoints. The legacy graphql-ws subprotocol handler does not verify that a connectioninit handshake has been completed before...

PT-2026-30761

Name of the Vulnerable Software and Affected Versions Strawberry GraphQL versions through 0.312.3 Description Strawberry GraphQL is susceptible to an authentication bypass on WebSocket subscription endpoints. The legacy graphql-ws subprotocol handler does not verify completion of a connection ini...

py-strawberry-graphql -- Multiple vulnerabilities

The Strawberry GraphQL project reports: Strawberry up until version 0.312.3 is vulnerable to an authentication bypass on WebSocket subscription endpoints. The legacy graphql-ws subprotocol handler does not verify that a 'connectioninit' handshake has been completed before processing start...