Apache CXF: OAuth2: HTTP Response Splitting via WWW-Authenticate Realm Injection_CVE-2026-50630

{
    "lastseen": "",
    "description": "A CRLF injection vulnerability exists in the OAuth2 AuthorizationUtils class. When constructing the WWW-Authenticate response header, the 'realm' parameter is concatenated without sanitizing Carriage Return (CR) and Line Feed (LF) characters. If an attacker can control the realm value, they can inject arbitrary HTTP headers or split the HTTP response entirely.\u00a0Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue.",
    "published": "2026-06-12T08:58:27.181Z",
    "modified": "2026-06-12T14:03:22.085Z",
    "type": "cve",
    "title": "Apache CXF: OAuth2: HTTP Response Splitting via WWW-Authenticate Realm Injection",
    "source": "apache",
    "references": "https://lists.apache.org/thread/bt7vnjzzkpd6vdhkxv103poor1jy5trm",
    "id": "CVE-2026-50630",
    "bulletinFamily": "",
    "cwe": [
        "CWE-113"
    ],
    "cvelist": null,
    "sourceData": "Apache Software Foundation Apache CXF 4.2.0\nApache Software Foundation Apache CXF 0",
    "sourceHref": "",
    "cvss": {
        "score": 6.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
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        "cvssV3": {
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    "href": "",
    "category_name": "CVE",
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    "product": "Apache CXF",
    "version": "4.2.0",
    "vendor": "Apache Software Foundation",
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    "ai_score": 0
}