{"id":"CVE-2017-12158","aliases":[],"url":"https://o3.security/vulnerability/CVE-2017-12158","summary":"Keycloak Reflected XSS","details":"It was found that Keycloak would accept a HOST header URL in the admin console and use it to determine web resource locations. An attacker could use this flaw against an authenticated user to attain reflected XSS via a malicious server.","published":"2022-05-13T01:38:14Z","modified":"2026-09-10T03:49:40.811270527Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-parent","fixedVersion":"3.4.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-12158"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2017:2904"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2017:2905"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2017:2906"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1489161"},{"type":"WEB","url":"https://web.archive.org/web/20210124114020/http://www.securityfocus.com/bid/101618"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-10T03:49:40.811270527Z"}}