{"cve":"CVE-2026-0871","nvd":{"published":"2026-02-27T08:17:09.410","modified":"2026-06-17T10:11:32.127","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","score":4.9},"cwes":["CWE-266"],"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"],"products":["redhat:build_of_keycloak","redhat:keycloak"],"source":"nvd","synced_at":"2026-10-19T22:24:17.937441719+00:00"},"epss":{"cve":"CVE-2026-0871","score":0.00349,"percentile":0.28515,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-v4jw-m6rm-399h","url":"https://osv.dev/vulnerability/GHSA-v4jw-m6rm-399h","summary":"Keycloak Server Private SPI: Improper Access Control Allows Administrators to Bypass Attribute Visibility Restrictions and Modify Unmanaged User Profile Attributes","modified":"2026-08-26T01:11:34.047363909Z","packages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-server-spi-private","purl":"pkg:maven/org.keycloak/keycloak-server-spi-private","ranges":["<26.5.2"],"fixed":["26.5.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}