What is CVE-2026-63750?

CVE-2026-63750 is a medium-severity vulnerability in Surrealdb, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-07-20.

How severe is CVE-2026-63750?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Surrealdb

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 WebSo…

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Surrealdb — versions 0, 3.1.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-63750?: CVE-2026-63750 is a medium-severity vulnerability in Surrealdb, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-07-20.
How severe is CVE-2026-63750?: Medium severity. CVSS v3 base score is 5.3 out of 10.