Authorization Flaw in Keycloak Administrative API
CVE-2026-18201

5.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Keycloak
Red Hat Data Grid 8
Red Hat Jboss Enterprise Application Platform Expansion Pack
Red Hat Single Sign-on 7
Vendor
CVE Published:
29 July 2026

What is CVE-2026-18201?

A vulnerability exists in Keycloak's administrative API that allows an authorized administrator to connect a new identity provider to an organization without possessing the necessary permissions. This oversight can enable an unauthorized administrator to manipulate user login settings for specific organizations, potentially compromising user authentication and access management.

References

https://access.redhat.com/security/cve/CVE-2026-18201
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2508290
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Paul Bottinelli (Trail of Bits) for reporting this issue.
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