CVE-2026-63750 — SurrealDB before 3.1.0 Memory Amplification via /sql WebSocket
SurrealDB versions before 3.1.0 fail to apply the SURREAL_WEBSOCKET_MAX_MESSAGE_SIZE limit to anonymous /sql WebSocket connections, allowing attackers to buffer unbounded frames…
Published: 2026-07-20 · CVSS: 6.9 · CVSS 4.0
SurrealDB versions before 3.1.0 fail to apply the SURREAL_WEBSOCKET_MAX_MESSAGE_SIZE 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 concurrent connections to consume excessive memory and degrade /sql availability.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7