CVE-2026-63743 SurrealDB before 3.1.0 Port-Specific Deny Rule Bypass via HTTP Redirect

What is CVE-2026-63743?

CVE-2026-63743 is a medium-severity server-side request forgery vulnerability in Surrealdb Surrealdb, published on 20 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-918

Which versions are affected by CVE-2026-63743?

2 open source packages ship an affected version, including surrealdb. It affects 1 product.

Products include Surrealdb Surrealdb.

How do I fix CVE-2026-63743?

Upgrade surrealdb to 3.1.0 or later.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-63743 being exploited?

There is no known exploitation of CVE-2026-63743 in the wild and no public exploit code.

Other vulnerabilities in Surrealdb Surrealdb

• CVE-2025-71392 SurrealDB before 2.2.2 SurrealQL Injection via export Critical 9.4
• CVE-2026-63756 SurrealDB before 3.1.0 Privilege Escalation via RPC Session Race Condition Critical 9.2
• CVE-2026-63747 SurrealDB before 3.1.0 Denial of Service via malformed RPC use High 8.7
• CVE-2026-63757 SurrealDB before 3.1.0 Session Hijacking via /rpc sessions High 8.7
• CVE-2026-63760 SurrealDB before 3.1.0 Denial of Service via JSON Parser High 8.7

All Surrealdb Surrealdb vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-97vg-427p-8hx5.