{"id":"CVE-2026-37980","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-37980","summary":"Keycloak: Arbitrary code execution via Stored Cross-Site Scripting (XSS) in organization selection login page","details":"A flaw was found in Keycloak, specifically in the organization selection login page. A remote attacker with `manage-realm` or `manage-organizations` administrative privileges can exploit a Stored Cross-Site Scripting (XSS) vulnerability. This flaw occurs because the `organization.alias` is placed into an inline JavaScript `onclick` handler, allowing a crafted JavaScript payload to execute in a user's browser when they view the login page. Successful exploitation enables arbitrary JavaScript execution, potentially leading to session theft, unauthorized account actions, or further attacks against users of the affected realm.","published":"2026-04-14T15:30:35Z","modified":"2026-04-16T01:56:32.764644Z","cvss":{"score":6.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-37980"},{"type":"WEB","url":"https://github.com/keycloak/keycloak/issues/48049"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-37980"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2455325"},{"type":"PACKAGE","url":"https://github.com/keycloak/keycloak"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-16T01:56:32.764644Z"}}