{"action":"Upgrade org.keycloak:keycloak-services to 26.6.3 or later.","affected":[{"fixed":"26.6.3","introduced":"0"}],"component":"org.keycloak:keycloak-services","cve_ids":["CVE-2026-9087"],"ecosystem":"Maven","epss":0.00312,"exploited":false,"fixed_versions":["26.6.3"],"ghsa_id":"GHSA-m6qj-3mpp-57v8","id":"tcs_01M5N94KCFR818A934BB9BMP7J","modified_at":"2026-06-26T12:21:29.360806048Z","published_at":"2026-05-20T18:31:36Z","references":["https://osv.dev/vulnerability/GHSA-m6qj-3mpp-57v8","https://nvd.nist.gov/vuln/detail/CVE-2026-9087","https://github.com/keycloak/keycloak/commit/37dabf59d0b5ca3e5b3b272bcd3b2580e67b94dd","https://access.redhat.com/errata/RHSA-2026:25097","https://access.redhat.com/errata/RHSA-2026:25098","https://access.redhat.com/errata/RHSA-2026:30049","https://access.redhat.com/errata/RHSA-2026:30050","https://access.redhat.com/security/cve/CVE-2026-9087","https://bugzilla.redhat.com/show_bug.cgi?id=2480172","https://github.com/keycloak/keycloak","https://github.com/keycloak/keycloak/releases/tag/26.6.3"],"severity":{"label":"medium","score":6.4},"sources":[{"source":"osv","source_id":"GHSA-m6qj-3mpp-57v8","url":"https://osv.dev/vulnerability/GHSA-m6qj-3mpp-57v8"}],"summary":"Keycloak: Insufficient verification proof scoping enables identity provider account linking attack and account compromise"}