CVE-2026-63750 — MEDIUM (5.3)

Q: How severe is CVE-2026-63750?

CVE-2026-63750 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-63750?

Check the references section above for vendor advisories and patch information. Affected products include: Surrealdb Surrealdb.

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.

CVSS Score

5.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

LOW

Affected Products

Vendor	Product	Versions
Surrealdb	Surrealdb	< 3.1.0

Related Weaknesses (CWE)

CWE-770

References

https://github.com/surrealdb/surrealdb/security/advisories/GHSA-65rj-r9fh-jp2vVendor AdvisoryMitigation
https://www.vulncheck.com/advisories/surrealdb-before-memory-amplification-via-sThird Party Advisory

FAQ

What is CVE-2026-63750?

CVE-2026-63750 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 ...

How severe is CVE-2026-63750?

CVE-2026-63750 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-63750?

Check the references section above for vendor advisories and patch information. Affected products include: Surrealdb Surrealdb.