Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Neo4J | Neo4J | < 5.26.22 |
Related Weaknesses (CWE)
References
- https://neo4j.com/security/CVE-2026-1524Vendor Advisory
FAQ
What is CVE-2026-1524?
CVE-2026-1524 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 mor...
How severe is CVE-2026-1524?
CVE-2026-1524 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-1524?
Check the references section above for vendor advisories and patch information. Affected products include: Neo4J Neo4J.