Medium · published July 18, 2026
SurrealDB versions before 2.2.2 contain a memory exhaustion vulnerability in the string::replace function that fails to restrict resulting string length when using regex patterns. An authenticated attacker can craft a malicious query to exhaust server memory through unbounded string allocations, causing denial of service.
| Product | Versions | Fixed in |
|---|---|---|
| surrealdb/surrealdb | < 2.0.5 | 2.0.5 |
| surrealdb/surrealdb | ≥ 2.1.0, < 2.1.5 | 2.1.5 |
| surrealdb/surrealdb | ≥ 2.2.0, < 2.2.2 | 2.2.2 |