CVE-2026-35523
HIGH SEVERITYCVSS Score & Metrics
Base Score
7.5 / 10
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Vulnerability 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.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-306
Source
GitHub
Vendor
pip
Product
strawberry-graphql
External References
- https://github.com/strawberry-graphql/strawberry/security/advisories/GHSA-vpwc-v33q-mq89
- https://github.com/strawberry-graphql/strawberry/commit/0977a4e6b41b7cfe3e9d8ba84a43458a2b0c54c2
- https://github.com/strawberry-graphql/strawberry/releases/tag/0.312.3
- https://github.com/advisories/GHSA-vpwc-v33q-mq89
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