{"id":"CVE-2026-0871","aliases":["BIT-keycloak-2026-0871","EUVD-2026-9005","GHSA-v4jw-m6rm-399h"],"status":"published","title":"Org.keycloak/keycloak-services: keycloak: unauthorized modification of unmanaged user attributes by administrators","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.","severity":{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00349,"percentile":0.2891,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-266","CWE-284"],"published":"2026-02-27T07:30:26Z","modified":"2026-10-28T02:31:06Z","fixes":[{"ecosystem":"Maven","package":"org.keycloak:keycloak-server-spi-private","fixed_in":["26.5.2"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"keycloak","fixed_in":["26.4.9"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.keycloak:keycloak-server-spi-private","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"26.5.2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"keycloak","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"26.4.9"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.keycloak:keycloak-server-spi-private","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"26.5.2"}]}],"versions":["10.0.0","10.0.1","10.0.2","11.0.0","11.0.1","11.0.2","11.0.3","12.0.0","12.0.1","12.0.2","12.0.3","12.0.4","13.0.0","13.0.1","14.0.0","15.0.0","15.0.1","15.0.2","15.1.0","15.1.1","16.0.0","16.1.0","16.1.1","17.0.0","17.0.1","18.0.0","18.0.1","18.0.2","19.0.0","19.0.1","19.0.2","19.0.3","2.4.0.CR1","2.4.0.Final","2.5.0.CR1","2.5.0.Final","2.5.1.Final","2.5.4.Final","2.5.5.Final","20.0.0","20.0.1","20.0.2","20.0.3","20.0.4","20.0.5","21.0.0","21.0.1","21.0.2","21.1.0","21.1.1","21.1.2","22.0.0","22.0.1","22.0.2","22.0.3","22.0.4","22.0.5","23.0.0","23.0.1","23.0.2","23.0.3","23.0.4","23.0.5","23.0.6","23.0.7","24.0.0","24.0.1","24.0.2","24.0.3","24.0.4","24.0.5","25.0.0","25.0.1","25.0.2","25.0.3","25.0.4","25.0.5","25.0.6","26.0.0","26.0.1","26.0.2","26.0.3","26.0.4","26.0.5","26.0.6","26.0.7","26.0.8","26.1.0","26.1.1","26.1.2","26.1.3","26.1.4","26.1.5","26.2.0","26.2.1","26.2.2","26.2.3","26.2.4","26.2.5","26.3.0","26.3.1","26.3.2","26.3.3","26.3.4","26.3.5","26.4.0","26.4.1","26.4.2","26.4.3","26.4.4","26.4.5","26.4.6","26.4.7","26.5.0","26.5.1","3.0.0.CR1","3.0.0.Final","3.1.0.CR1","3.1.0.Final","3.2.0.CR1","3.2.0.Final","3.2.1.Final","3.3.0.CR1","3.3.0.CR2","3.3.0.Final","3.4.0.CR1","3.4.0.Final","3.4.1.CR1","3.4.1.Final","3.4.2.Final","3.4.3.Final","4.0.0.Beta1","4.0.0.Beta2","4.0.0.Beta3","4.0.0.Final","4.1.0.Final","4.2.0.Final","4.2.1.Final","4.3.0.Final","4.4.0.Final","4.5.0.Final","4.6.0.Final","4.7.0.Final","4.8.0.Final","4.8.1.Final","4.8.2.Final","4.8.3.Final","5.0.0","6.0.0","6.0.1","7.0.0","7.0.1","8.0.0","8.0.1","8.0.2","9.0.0","9.0.2","9.0.3"]}],"products":[{"vendor":"red hat","product":"red hat build of keycloak 26.4"},{"vendor":"red hat","product":"red hat build of keycloak 26.4.9"},{"vendor":"red hat","product":"red hat jboss enterprise application platform 8"},{"vendor":"red hat","product":"red hat jboss enterprise application platform expansion pack"},{"vendor":"red hat","product":"red hat single sign-on 7"},{"vendor":"redhat","product":"build_of_keycloak"},{"vendor":"redhat","product":"keycloak"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:2365","tags":["vendor-advisory","x_refsource_REDHAT","Vendor Advisory","advisory","web"]},{"url":"https://access.redhat.com/errata/RHSA-2026:2366","tags":["vendor-advisory","x_refsource_REDHAT","Vendor Advisory","advisory","web"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-0871","tags":["vdb-entry","x_refsource_REDHAT","Vendor Advisory","advisory","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2428881","tags":["issue-tracking","x_refsource_REDHAT","Issue Tracking","Vendor Advisory","advisory","report","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0871","tags":["web","advisory"]},{"url":"https://github.com/keycloak/keycloak/issues/45873","tags":["web"]},{"url":"https://github.com/keycloak/keycloak/commit/9d0f679ecea405958f167fcd0f4a6db6ae32c3fa","tags":["web"]},{"url":"https://github.com/advisories/GHSA-v4jw-m6rm-399h"},{"url":"https://access.redhat.com/downloads/content/package-browser/","tags":["web"]},{"url":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","tags":["web"]},{"url":"https://catalog.redhat.com/software/containers/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0871.json","tags":["advisory"]},{"url":"https://github.com/keycloak/keycloak","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-0871","title":"Org.keycloak/keycloak-services: keycloak: unauthorized modification of unmanaged user attributes by administrators","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.","status":"published","published":"2026-02-27T07:30:26.766Z","modified":"2026-03-06T18:50:44.774Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T14:20:13.587351Z"}],"euvd":[{"id":"EUVD-2026-9005","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.","status":"published","published":"2026-02-27T07:30:26Z","modified":"2026-03-06T18:50:44Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T19:48:07.686491Z"}],"ghsa":[{"id":"GHSA-v4jw-m6rm-399h","title":"Keycloak Server Private SPI: Improper Access Control Allows Administrators to Bypass Attribute Visibility Restrictions and Modify Unmanaged User Profile Attributes","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.","status":"published","published":"2026-02-27T09:30:29Z","modified":"2026-02-28T02:42:57Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-266","CWE-284"],"updated_at":"2026-11-02T14:39:30.031684Z"}],"nvd":[{"id":"CVE-2026-0871","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.","status":"published","published":"2026-02-27T08:17:09.41Z","modified":"2026-06-17T10:11:32.127Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T14:12:07.420927Z"}],"osv":[{"id":"CVE-2026-0871","title":"Org.keycloak/keycloak-services: keycloak: unauthorized modification of unmanaged user attributes by administrators","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.","status":"published","published":"2026-02-27T07:30:26.766Z","modified":"2026-10-28T02:31:06.915315383Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T15:44:53.490346Z"},{"id":"GHSA-v4jw-m6rm-399h","title":"Keycloak Server Private SPI: Improper Access Control Allows Administrators to Bypass Attribute Visibility Restrictions and Modify Unmanaged User Profile Attributes","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.","status":"published","published":"2026-02-27T09:30:29Z","modified":"2026-08-26T01:11:34.047363909Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-266","CWE-284"],"updated_at":"2026-11-02T15:46:56.639206Z"},{"id":"BIT-keycloak-2026-0871","title":"Org.keycloak/keycloak-services: keycloak: unauthorized modification of unmanaged user attributes by administrators","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.","status":"published","published":"2026-08-25T11:41:30.675Z","modified":"2026-09-08T08:48:06.81390957Z","updated_at":"2026-11-02T15:28:32.162822Z"}]}}