Auth bypass in Surrealdb
CVE-2026-63741
SurrealDB versions before 3.1.0 fail to validate DEFINE NAMESPACE or DEFINE DATABASE permissions when processing USE NS and USE DB statements. Unauthenticated attackers can create arbitrary namespaces and databases by issuing USE commands, bypassing authorization checks in the RPC use method and SurrealQL executor.
Vulnerability class: Broken Access Control
EPSS: 0.004 (29.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
Affected products
- Surrealdb — versions 0, 3.1.0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory, Mitigation, Vendor Advisory)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-63741?
- CVE-2026-63741 is a medium-severity vulnerability in Surrealdb, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-07-20.
- How severe is CVE-2026-63741?
- Medium severity. CVSS v3 base score is 6.5 out of 10.