What is CVE-2026-63759?

CVE-2026-63759 is a medium-severity vulnerability in Surrealdb, classified under Uncontrolled Recursion. CVSS score: 6.5/10. Published 2026-07-20.

How severe is CVE-2026-63759?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Surrealdb

CVE-2026-63759

SurrealDB before 3.1.0 fails to enforce recursion depth limits in the type/kind parser when processing nested type annotations. Authenticated attackers can send queries with deeply nested type annotations to exhaust server memory and crash the process.

EPSS: 0.004 (37.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Surrealdb — versions 0, 3.1.0

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

disclosure@vulncheck.com (vendor-advisory, Mitigation, Vendor Advisory)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-63759?: CVE-2026-63759 is a medium-severity vulnerability in Surrealdb, classified under Uncontrolled Recursion. CVSS score: 6.5/10. Published 2026-07-20.
How severe is CVE-2026-63759?: Medium severity. CVSS v3 base score is 6.5 out of 10.