CVE-2026-63750

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

5.3 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L                                    

Vulnerability Description

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.

Vulnerability Details

Published Date

July 20, 2026

Last Modified

July 20, 2026

CWE ID

CWE-770

Source

NVD

Vendor

surrealdb

Product

surrealdb

External References

https://github.com/surrealdb/surrealdb/security/advisories/GHSA-65rj-r9fh-jp2v
https://www.vulncheck.com/advisories/surrealdb-before-memory-amplification-via-sql-websocket

CVE-2026-63750

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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