{"cve":"CVE-2026-0707","nvd":{"published":"2026-01-08T04:15:56.520","modified":"2026-10-26T21:10:00.170","status":"Deferred","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":["CWE-551"],"references":["https://access.redhat.com/errata/RHSA-2026:3947","https://access.redhat.com/errata/RHSA-2026:3948","https://access.redhat.com/security/cve/CVE-2026-0707","https://bugzilla.redhat.com/show_bug.cgi?id=2427768","https://github.com/keycloak/keycloak/issues/49433"],"products":[],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-0707","score":0.00403,"percentile":0.34349,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-gv94-wp4h-vv8p","url":"https://osv.dev/vulnerability/GHSA-gv94-wp4h-vv8p","summary":"Keycloak has Incorrect Behavior Order: Authorization Before Parsing and Canonicalization","modified":"2026-06-09T12:15:08.431932453Z","packages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-parent","purl":"pkg:maven/org.keycloak/keycloak-parent","ranges":["<=26.5.0"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}