CVE-2026-63737: Surrealdb

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

SurrealDB versions before 3.1.5 contain a denial of service vulnerability where authenticated users can crash the server with queries containing long chains of operators. Attackers can submit queries with tens of thousands of chained operators that create unbounded expression trees, causing stack overflow during query processing and aborting the entire process.

Affected products

• Surrealdb Surrealdb: from 3.0.0, before 3.1.5 (fixed in 3.1.5)

Published 2026-07-20. Last modified 2026-07-22.