CVE-2026-102876

High

Description

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.

SeverityHigh

CVSS8.1

Exploit probability19. percentile0.3%

ProductSurrealdb

PublishedSep 29, 2026

First seenSep 29, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

surrealdb surrealdb3.3.0 or later

Patches

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

Vendor advisories

Affected products

Product	Affected versions	Fixed in
surrealdb surrealdb	v < 3.3.0	3.3.0

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