---
id: CVE-2026-102876
title: >-
  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 head…
summary: >-
  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 head…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-639
vendor: surrealdb
product: surrealdb
affected:
  - surrealdb < 3.3.0
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T20:17:18.377'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102876'
references:
  - url: 'https://github.com/surrealdb/surrealdb'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/surrealdb/surrealdb/blob/v3.2.4/surrealdb/server/src/ntw/auth.rs
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/surrealdb/surrealdb/commit/5000e233b4a8b96689c82715c172061dcf711d31
    label: disclosure@vulncheck.com
  - url: 'https://github.com/surrealdb/surrealdb/releases/tag/v3.3.0'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/surrealdb/surrealdb/security/advisories/GHSA-vx2p-7hhm-wv62
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/surrealdb-before-3.3.0-cross-tenant-access-via-headers
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-29T20:46:06.443Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.