CVE-2026-109343 SurrealDB before 3.3.0 Cross-Tenant Access via USE Statement
Authenticated users can bypass tenant isolation via the USE statement to access and modify data in other namespaces or databases.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109343?
CVE-2026-109343 is a high-severity missing authorization vulnerability in surrealdb, published on 12 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
SurrealDB before 3.3.0 allows cross-tenant access because the SurrealQL USE statement switches a session to any namespace/database without checking that the caller's authenticated level covers it. Authenticated namespace, database, or record users can switch to another tenant and read, create, update, or delete rows in tables whose PERMISSIONS allow it, such as PERMISSIONS FULL.
Weakness: CWE-639
Which versions are affected by CVE-2026-109343?
How do I fix CVE-2026-109343?
No fix has been published for CVE-2026-109343 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-109343 being exploited?
There is no known exploitation of CVE-2026-109343 in the wild and no public exploit code.
Sources
Also known as GHSA-j6qq-wxh9-849r.