SSRF in Surrealdb
CVE-2026-63743
SurrealDB before 3.1.0 contains a capability bypass vulnerability in HTTP redirect handling that allows authenticated users to circumvent port-scoped --deny-net rules. Attackers can chain an HTTP redirect from an allowed hostname to a denied host:port combination, and the redirect is followed because the port information is dropped during redirect policy evaluation.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.002 (16.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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-2026-63743?
- CVE-2026-63743 is a medium-severity vulnerability in Surrealdb, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.4/10. Published 2026-07-20.
- How severe is CVE-2026-63743?
- Medium severity. CVSS v3 base score is 6.4 out of 10.