CVE-2026-102876 SurrealDB before 3.3.0 Cross-Tenant Access via Headers
Attackers can bypass authorization to read and modify records across tenant boundaries by manipulating HTTP headers in SurrealDB.
- 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-2026-102876?
CVE-2026-102876 is a high-severity missing authorization vulnerability in surrealdb, published on 29 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
SurrealDB before 3.3.0 contains an authorization bypass in HTTP session construction where check_auth() verifies credentials against Surreal-Auth-NS and Surreal-Auth-DB headers but constructs sessions using Surreal-NS and Surreal-DB headers without validating access permissions. Attackers can authenticate as a user from one tenant while selecting another tenant's namespace and database to read, create, and modify records across tenant boundaries.
Weakness: CWE-639
Which versions are affected by CVE-2026-102876?
How do I fix CVE-2026-102876?
No fix has been published for CVE-2026-102876 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-2026-102876 being exploited?
There is no known exploitation of CVE-2026-102876 in the wild and no public exploit code.
Sources
Also known as GHSA-vx2p-7hhm-wv62, GHSA-xjq6-rqgg-x5j7.