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Description

A flaw was found in the admin-ui-ext component of Keycloak, which provides extended administrative user interface capabilities. The issue occurs because certain bulk role-removal endpoints fail to perform granular permission checks when deleting role mappings. This allows a delegated administrator with limited permissions to remove highly privileged roles from other users or groups, potentially disrupting administrative access control.

PUBLISHED Reserved 2026-06-11 | Published 2026-06-11 | Updated 2026-06-11 | Assigner redhat




MEDIUM: 4.9CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Problem types

Direct Request ('Forced Browsing')

Product status

Default status
affected

Default status
affected

Default status
affected

Default status
unaffected

Timeline

2026-06-08:Reported to Red Hat.
2026-06-11:Made public.

Credits

Red Hat would like to thank Wesley "Alardiians" Colquitt (Byteshyft Studios) for reporting this issue.

References

access.redhat.com/security/cve/CVE-2026-11986 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2487906 (RHBZ#2487906) issue-tracking

cve.org (CVE-2026-11986)

nvd.nist.gov (CVE-2026-11986)

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