CVE-2026-35523 | BDVDB-2026-325339 Detail

Description#

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 connection_init handshake has been completed before processing start (subscription) messages. This allows a remote attacker to skip the on_ws_connect authentication hook entirely by connecting with the graphql-ws subprotocol and sending a start message directly, without ever sending connection_init. This vulnerability is fixed in 0.312.3.

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Exploit#

History#

1. Version 12026-04-07Record published in the CVE List.
2. Version 22026-04-09Most recent update recorded in the CVE List.