Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-63750

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 16.1%
CVSS Severity
CVSS v3 Score 5.3
Products affected by CVE-2026-63750


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