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Description

A flaw was found in Keycloak. The User-Managed Access (UMA) 2.0 Protection API endpoint for permission tickets fails to enforce the `uma_protection` role check. This allows any authenticated user with a token issued for a resource server client, even without the `uma_protection` role, to enumerate all permission tickets in the system. This vulnerability partial leads to information disclosure.

PUBLISHED Reserved 2026-02-25 | Published 2026-03-26 | Updated 2026-04-02 | Assigner redhat




MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Problem types

Improper Handling of Insufficient Permissions or Privileges

Product status

Default status
affected

26.4.11-1 (rpm) before *
unaffected

Default status
affected

26.4-14 (rpm) before *
unaffected

Default status
affected

26.4-14 (rpm) before *
unaffected

Default status
unaffected

Timeline

2026-02-25:Reported to Red Hat.
2026-02-25:Made public.

Credits

Red Hat would like to thank Evan Hendra (Independent Security Researcher) for reporting this issue.

References

access.redhat.com/errata/RHSA-2026:6477 (RHSA-2026:6477) vendor-advisory

access.redhat.com/errata/RHSA-2026:6478 (RHSA-2026:6478) vendor-advisory

access.redhat.com/security/cve/CVE-2026-3190 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2442572 (RHBZ#2442572) issue-tracking

cve.org (CVE-2026-3190)

nvd.nist.gov (CVE-2026-3190)

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