GitHub Advisoryadvisory · Maven
GHSA-v4jw-m6rm-399h Keycloak Server Private SPI: Improper Access Control Allows Administrators to Bypass Attribute Visibility Restrictions and Modify Unmanaged User Profile Attributes
MEDIUM
Official page ↗
- Aliases
- CVE-2026-0871
- Ecosystem
- Maven
- Packages
- org.keycloak:keycloak-server-spi-private
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
- Weaknesses
- CWE-266, CWE-284
- Reviewed
- 2026-02-28
Affected packages
• Maven org.keycloak:keycloak-server-spi-private: < 26.5.2 → fixed in 26.5.2
Description
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.
Related
Alias · CVE (1)
- CVE-2026-0871 A flaw was found in Keycloak. vulnerability
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-0871 advisory
- https://github.com/keycloak/keycloak/issues/45873 web
- https://github.com/keycloak/keycloak/commit/9d0f679ecea405958f167fcd0f4a6db6ae32c3fa web
- https://access.redhat.com/errata/RHSA-2026:2365 web
- https://access.redhat.com/errata/RHSA-2026:2366 web
- https://access.redhat.com/security/cve/CVE-2026-0871 web
- https://bugzilla.redhat.com/show_bug.cgi?id=2428881 web
- https://github.com/keycloak/keycloak package