CVE-2026-0871
4.9
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Summary
A flaw was found in Keycloak. An administrator with manage-users permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles, even when the system is configured to restrict such modifications.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4.9-1 < * | unaffected |
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4-11 < * | unaffected |
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4-10 < * | unaffected |
Weaknesses
- CWE-266: Incorrect Privilege Assignment
Workarounds
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://access.redhat.com/errata/RHSA-2026:2365
- https://access.redhat.com/errata/RHSA-2026:2366
- https://access.redhat.com/security/cve/CVE-2026-0871
- https://bugzilla.redhat.com/show_bug.cgi?id=2428881
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