CVE-2026-63750 SurrealDB before 3.1.0 Memory Amplification via /sql WebSocket

SurrealDB versions before 3.1.0 fail to apply the SURREALWEBSOCKETMAXMESSAGESIZE limit to anonymous /sql WebSocket connections, allowing attackers to buffer unbounded frames in the per-connection read buffer. Attackers can stream WebSocket frames larger than the configured limit across multiple...

GHSA-65RJ-R9FH-JP2V SurrealDB vulnerable to pre-auth memory amplification via unbounded `/sql` WebSocket frames

An anonymous caller could degrade /sql availability by streaming WebSocket frames many times larger than the operator-configured per-connection limit. The /sql upgrade handler accepted anonymous connections and did not propagate SURREALWEBSOCKETMAXMESSAGESIZE to the WebSocket protocol layer —...