CVE-2026-63741
Received Received - Intake

SurrealDB Permission Bypass via USE Command

Publication date: 2026-07-20

Last updated on: 2026-07-20

Assigner: VulnCheck

Description
SurrealDB versions before 3.1.0 fail to validate DEFINE NAMESPACE or DEFINE DATABASE permissions when processing USE NS and USE DB statements. Unauthenticated attackers can create arbitrary namespaces and databases by issuing USE commands, bypassing authorization checks in the RPC use method and SurrealQL executor.

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Meta Information

Published
2026-07-20
Last Modified
2026-07-20
Generated
2026-07-21
AI Q&A
2026-07-20
EPSS Evaluated
N/A
NVD
CVE-2026-63741
EUVD
EUVD-2026-45912

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
surrealdb surrealdb to 3.1.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

CVE-2026-63741 is an authentication bypass vulnerability in SurrealDB versions before 3.1.0. It allows unauthenticated attackers to create arbitrary namespaces and databases by exploiting USE NS and USE DB statements. The flaw occurs because the software fails to validate DEFINE NAMESPACE or DEFINE DATABASE permissions when processing these commands.

Detection Guidance

Check SurrealDB version with command: surrealdb version. If version is below 3.1.0, the system is vulnerable. Monitor logs for unexpected USE NS or USE DB commands creating new namespaces/databases without authentication.

Impact Analysis

An attacker could create new namespaces and databases without required permissions, recreate dropped parent namespaces using stale tokens, or exhaust catalog storage by repeatedly creating resources. They cannot read or modify existing data or escalate privileges on existing resources. This affects deployments with auth_enabled=false.

Compliance Impact

This vulnerability allows unauthenticated attackers to create arbitrary namespaces and databases, bypassing authorization checks. This could lead to unauthorized data storage or manipulation, potentially violating compliance requirements for data integrity, access control, and auditability under standards like GDPR and HIPAA.

Mitigation Strategies

Upgrade SurrealDB to version 3.1.0 or later immediately. If upgrading is not possible, enable authentication with --auth flag and require sign-in before issuing USE commands. Set --deny-arbitrary-query * for guest principals as a temporary workaround.

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