CVE-2026-0871 (GCVE-0-2026-0871)

Vulnerability from cvelistv5 – Published: 2026-02-27 07:30 – Updated: 2026-03-06 18:50
VLAI?
Title
Org.keycloak/keycloak-services: keycloak: unauthorized modification of unmanaged user attributes by administrators
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.
Severity ?
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-266 - Incorrect Privilege Assignment
Assigner
References
https://access.redhat.com/errata/RHSA-2026:2365 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2366 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-0871 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2428881 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4.9-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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    Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-11 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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    Red Hat Red Hat build of Keycloak 26.4 Unaffected: 26.4-10 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.4::el9
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    Red Hat Red Hat build of Keycloak 26.4.9     cpe:/a:redhat:build_keycloak:26.4::el9
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    Red Hat Red Hat JBoss Enterprise Application Platform 8     cpe:/a:redhat:jboss_enterprise_application_platform:8
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    Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack     cpe:/a:redhat:jbosseapxp
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    Red Hat Red Hat Single Sign-On 7     cpe:/a:redhat:red_hat_single_sign_on:7
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Date Public ?
2025-01-13 08:08
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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