{"id":"CVE-2021-3424","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-3424","summary":"Keycloak is vulnerable to IDN homograph attack","details":"A flaw was found in keycloak as shipped in Red Hat Single Sign-On 7.4 where IDN homograph attacks are possible. A malicious user can register himself with a name already registered and trick admin to grant him extra privileges.","published":"2022-04-28T21:00:21Z","modified":"2023-11-08T04:06:07.448525Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","fixedVersion":"18.0.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3424"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1933320"},{"type":"PACKAGE","url":"https://github.com/keycloak/keycloak"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2023-11-08T04:06:07.448525Z"}}