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2.1
Neo4j Enterprise: Unauthorised Access via SSO Configuration Error
CVE-2026-1524
Summary
If you use multiple Single Sign-On (SSO) providers with Neo4j Enterprise, a specific configuration mistake can allow unauthorized users to access your database. This can happen if you have a provider that only handles authentication, but also has permission levels higher than intended. To fix this, update to Neo4j Enterprise version 2026.02 or later.
Original title
An edgecase in SSO implementation in Neo4j Enterprise edition versions prior to version 2026.02 can lead to unauthorised access under the following conditions:
If a neo4j admin configures two or ...
Original description
An edgecase in SSO implementation in Neo4j Enterprise edition versions prior to version 2026.02 can lead to unauthorised access under the following conditions:
If a neo4j admin configures two or more OIDC providers AND configures one or more of them to be an authorization provider AND configures one or more of them to be authentication-only, then those that are authentication-only will also provide authorization. This edgecase becomes a security problem only if the authentication-only provider contains groups which have higher privileges than provided by the intended (configured) authorization provider.
When using multiple plugins for authentication and authorisation, prior to the fix the issue could lead to a plugin configured to provide only authentication or authorisation capabilities erroneously providing both capabilities.
We recommend upgrading to versions 2026.02 (or 5.26.22) where the issue is fixed.
If a neo4j admin configures two or more OIDC providers AND configures one or more of them to be an authorization provider AND configures one or more of them to be authentication-only, then those that are authentication-only will also provide authorization. This edgecase becomes a security problem only if the authentication-only provider contains groups which have higher privileges than provided by the intended (configured) authorization provider.
When using multiple plugins for authentication and authorisation, prior to the fix the issue could lead to a plugin configured to provide only authentication or authorisation capabilities erroneously providing both capabilities.
We recommend upgrading to versions 2026.02 (or 5.26.22) where the issue is fixed.
nvd CVSS4.0
2.1
Vulnerability type
CWE-287
Improper Authentication
CWE-863
Incorrect Authorization
Published: 11 Mar 2026 · Updated: 13 Mar 2026 · First seen: 11 Mar 2026