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CVE-2026-0707

Keycloak: keycloak authorization header parsing leading to potential security control bypass

CVSS 5.3 MEDIUMEPSS 0.4%CWE-551
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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