CVE-2026-102876

EUVD-2026-89411

29.09.2026, 20:17

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
VulnCheck	CNA	8.1 HIGH	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
surrealdb	surrealdb	𝑥 < 3.3.0	CNA

Common Weakness Enumeration

CWE-639 - Authorization Bypass Through User-Controlled Key
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

References

https://github.com/surrealdb/surrealdb

https://github.com/surrealdb/surrealdb/blob/v3.2.4/surrealdb/server/src/ntw/auth.rs

https://github.com/surrealdb/surrealdb/commit/5000e233b4a8b96689c82715c172061dcf711d31

https://github.com/surrealdb/surrealdb/releases/tag/v3.3.0

https://github.com/surrealdb/surrealdb/security/advisories/GHSA-vx2p-7hhm-wv62

https://www.vulncheck.com/advisories/surrealdb-before-3.3.0-cross-tenant-access-via-headers