CVE-2026-102876CWE-639

CVE-2026-102876

High · published September 30, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
18.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
8.6 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00270 · 18.2th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-09-30T00:17Z
References (6)
https://github.com/surrealdb/surrealdb · [email protected]https://github.com/surrealdb/surrealdb/blob/v3.2.4/surrealdb/server/src/ntw/auth.rs · [email protected]https://github.com/surrealdb/surrealdb/commit/5000e233b4a8b96689c82715c172061dcf711d31 · [email protected]https://github.com/surrealdb/surrealdb/releases/tag/v3.3.0 · [email protected]https://github.com/surrealdb/surrealdb/security/advisories/GHSA-vx2p-7hhm-wv62 · [email protected]https://www.vulncheck.com/advisories/surrealdb-before-3.3.0-cross-tenant-access-via-headers · [email protected]
EPSS history
Timeline
  • 01 OCT 03:44Z
    EPSS moved — → 0%
    epss
  • 29 SEP 20:01Z
    SurrealDB before 3.3.0 Cross-Tenant Access via Headers
    cvelistv5