Role-Removal Permission Flaw in Keycloak's Admin User Interface
CVE-2026-11986

4.9MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Keycloak
Red Hat Jboss Enterprise Application Platform Expansion Pack
Vendor
CVE Published:
11 June 2026

What is CVE-2026-11986?

A security issue has been identified in the admin-ui-ext component of Keycloak. Specifically, the flaw arises from insufficient permission checks on certain bulk role-removal endpoints. As a result, delegated administrators who possess limited permissions may exploit this vulnerability to remove highly privileged roles from users or groups. This compromise could severely impact administrative access control, leading to unauthorized access and potential disruption in the management of user roles.

References

https://access.redhat.com/security/cve/CVE-2026-11986
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2487906
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
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 Wesley "Alardiians" Colquitt (Byteshyft Studios) for reporting this issue.
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