CVE-2025-71393 SurrealDB before 2.2.2 Memory Exhaustion via Nested Functions

What is CVE-2025-71393?

CVE-2025-71393 is a medium-severity denial of service vulnerability in Surrealdb Surrealdb, published on 18 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

SurrealDB before 2.2.2 with scripting enabled fails to properly enforce recursion limits when native functions contain embedded JavaScript that issues new queries. Authenticated attackers can bypass the recursion limit by chaining native and JavaScript function calls to trigger infinite recursion and exhaust server memory.

Weakness: CWE-674

Which versions are affected by CVE-2025-71393?

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

Products include Surrealdb Surrealdb.

How do I fix CVE-2025-71393?

Upgrade surrealdb to a fixed version for your release line: 2.0.5, 2.1.5 or 2.2.2.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-71393 being exploited?

There is no known exploitation of CVE-2025-71393 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
• GitHub advisory
• How this page is made

Also known as GHSA-m7rc-8w7m-r9qr, GHSA-w8p8-58rp-4rqp.