{"id":"CVE-2021-20323","aliases":["GHSA-xpgc-j48j-jwv9"],"url":"https://o3.security/vulnerability/CVE-2021-20323","summary":"Cross-site Scripting in Keycloak","details":"A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak.","published":"2022-03-25T19:15:08.560Z","modified":"2026-08-07T15:15:01.177118Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":2,"affectedPackages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-core","fixedVersion":"17.0.0"}],"fix":null,"references":[{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2013577"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T15:15:01.177118Z"}}