Auth bypass in Surrealdb
CVE-2026-63745
SurrealDB versions before 3.1.0 contain an authorization bypass vulnerability where authenticated users can spoof composite record-id field values by writing to editable body fields. Attackers can bypass permission rules that gate access on id components like tenant isolation by setting same-named body fields to spoofed values that permission checks incorrectly read instead of the immutable id key.
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.002 (16.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
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-2026-63745?
- CVE-2026-63745 is a medium-severity vulnerability in Surrealdb, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-07-20.
- How severe is CVE-2026-63745?
- Medium severity. CVSS v3 base score is 5.4 out of 10.