Auth bypass in Surrealdb
CVE-2026-63735
SurrealDB versions before 3.2.0 fail to validate namespace and database scope in custom API routes, allowing authenticated users to invoke endpoints in different namespaces/databases. Attackers with valid credentials for any namespace/database can access custom API endpoints in other tenants by specifying the target scope in the URL path, reading sensitive data or triggering unintended operations.
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.004 (29.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Surrealdb — versions 0, 3.2.0
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-2026-63735?
- CVE-2026-63735 is a high-severity vulnerability in Surrealdb, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-07-20.
- How severe is CVE-2026-63735?
- High severity. CVSS v3 base score is 8.1 out of 10.