{"id":"CVE-2024-4540","aliases":[],"url":"https://o3.security/vulnerability/CVE-2024-4540","summary":"Keycloak exposes sensitive information in Pushed Authorization Requests (PAR)","details":"A flaw was found in Keycloak in the OAuth 2.0 Pushed Authorization Requests (PAR). Client provided parameters were found to be included in plain text in the KC_RESTART cookie returned by the authorization server's HTTP response to a request_uri authorization request. This could lead to an information disclosure vulnerability.","published":"2024-06-10T18:36:56Z","modified":"2026-08-07T08:12:15.305426269Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","fixedVersion":"24.0.5"}],"fix":{"url":"https://github.com/keycloak/keycloak/commit/2191cc26ae6deb52eeaf74046027b65804d16fd0","label":"keycloak/keycloak@2191cc2"},"references":[{"type":"WEB","url":"https://github.com/keycloak/keycloak/security/advisories/GHSA-69fp-7c8p-crjr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-4540"},{"type":"WEB","url":"https://github.com/keycloak/keycloak/commit/2191cc26ae6deb52eeaf74046027b65804d16fd0"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:3566"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:3567"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:3568"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:3570"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:3572"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:3573"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:3574"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:3575"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2024:3576"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2024-4540"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2279303"},{"type":"PACKAGE","url":"https://github.com/keycloak/keycloak"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T08:12:15.305426269Z"}}