High severity · published Oct 12, 2026
CVE-2026-109343
SurrealDB before 3.3.0 Cross-Tenant Access via USE Statement
8.1
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SU
surrealdb · surrealdb
before 3.3.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109343
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109343
vendor-advisory
https://github.com/surrealdb/surrealdb/security/advisories/GHSA-2v9j-645m-pcrq
third-party-advisory
https://www.vulncheck.com/advisories/surrealdb-before-3.3.0-cross-tenant-access-via-use-statement
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