Keycloak: keycloak authorization header parsing leading to potential security control bypass_CVE-2026-0707

{
    "lastseen": "",
    "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.",
    "published": "2026-01-08T03:41:27.775Z",
    "modified": "2026-01-08T03:41:27.775Z",
    "type": "cve",
    "title": "Keycloak: keycloak authorization header parsing leading to potential security control bypass",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-0707\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2427768",
    "id": "CVE-2026-0707",
    "bulletinFamily": "",
    "cwe": [
        "CWE-551"
    ],
    "cvelist": null,
    "sourceData": "",
    "sourceHref": "",
    "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",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Red Hat Build of Keycloak",
    "version": "",
    "vendor": "Red Hat",
    "ai_description": "",
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    "ai_score": 0
}