{"id":"CVE-2018-14655","aliases":["GHSA-458h-wv48-fq75"],"url":"https://o3.security/vulnerability/CVE-2018-14655","summary":"Keycloak vulnerable to cross-site scripting via the state parameter","details":"A flaw was found in Keycloak 3.4.3.Final, 4.0.0.Beta2, 4.3.0.Final. When using 'response_mode=form_post' it is possible to inject arbitrary Javascript-Code via the 'state'-parameter in the authentication URL. This allows an XSS-Attack upon succesfully login.","published":"2018-11-13T19:29:00.307Z","modified":"2026-08-07T11:31:20.813903748Z","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":null},{"ecosystem":"Maven","name":"org.keycloak:keycloak-parent","fixedVersion":null},{"ecosystem":"Maven","name":"org.keycloak:keycloak-parent","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:3592"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:3593"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:3595"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14655"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-14655"},{"type":"PACKAGE","url":"https://github.com/keycloak/keycloak"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:31:20.813903748Z"}}