PT-2026-61566 · Surrealdb · Surrealdb

CVE-2026-63750 · Published 2026-07-20 · Updated 2026-07-20

NVD

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

Fix

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2026-63750

Affected Products

Surrealdb

References · 3

• https://github.com/surrealdb/surrealdb/security/advisories/GHSA-65rj-r9fh-jp2v · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-63750 · Security Note
• https://vulncheck.com/advisories/surrealdb-before-memory-amplification-via-sql-websocket · Note