{"id":"CVE-2026-0707","aliases":["GHSA-gv94-wp4h-vv8p"],"url":"https://o3.security/vulnerability/CVE-2026-0707","summary":"Keycloak: keycloak authorization header parsing leading to potential security control bypass","details":"A flaw was found in Keycloak. The Keycloak Authorization header parser is overly permissive regarding the formatting of the \"Bearer\" authentication scheme. It accepts non-standard characters (such as tabs) as separators and tolerates case variations that deviate from RFC 6750 specifications.","published":"2026-01-08T03:41:27.775Z","modified":"2026-11-06T10:46:29.904699110Z","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-parent","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"WEB","url":"https://catalog.redhat.com/software/containers/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:3947"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:3948"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-0707"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0707.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0707"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2427768"},{"type":"REPORT","url":"https://github.com/keycloak/keycloak/issues/49433"},{"type":"PACKAGE","url":"https://github.com/keycloak/keycloak"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-11-06T10:46:29.904699110Z"}}