GHSA-VPWC-V33Q-MQ89 strawberry-graphql: Authentication bypass via legacy graphql-ws WebSocket subprotocol

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 subscription messages. This allows a remote...