CVE-2026-102876

HIGH

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.

CVSS v3.1 Score

8.1
HIGH
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
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Published: 9/29/2026Modified: 10/2/2026

Related Intelligence (1)

HIGHVulnerability

NVD HIGH: CVE-2026-102876 — SurrealDB before 3.3.0 contains an authorization bypass in HTTP session construc...

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, cr

CVE-2026-102876
NIST NVD

References (6)

https://github.com/surrealdb/surrealdbhttps://github.com/surrealdb/surrealdb/blob/v3.2.4/surrealdb/server/src/ntw/auth.rshttps://github.com/surrealdb/surrealdb/commit/5000e233b4a8b96689c82715c172061dcf711d31https://github.com/surrealdb/surrealdb/releases/tag/v3.3.0https://github.com/surrealdb/surrealdb/security/advisories/GHSA-vx2p-7hhm-wv62https://www.vulncheck.com/advisories/surrealdb-before-3.3.0-cross-tenant-access-via-headers