Libsoup: libsoup: duplicate host header handling causes host-parsing discrepancy (first- vs last-value wins)_CVE-2025-14523

{
    "lastseen": "",
    "description": "A flaw in libsoup\u2019s HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, so this mismatch can cause vhost confusion where a proxy routes a request to one backend but the backend interprets it as destined for another host. This discrepancy enables request-smuggling style attacks, cache poisoning, or bypassing host-based access controls when an attacker supplies duplicate Host headers.",
    "published": "2025-12-11T12:30:59.266Z",
    "modified": "2025-12-11T12:30:59.266Z",
    "type": "cve",
    "title": "Libsoup: libsoup: duplicate host header handling causes host-parsing discrepancy (first- vs last-value wins)",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2025-14523\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2421349",
    "id": "CVE-2025-14523",
    "bulletinFamily": "",
    "cwe": [
        "CWE-444"
    ],
    "cvelist": null,
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    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N",
        "version": "3.1"
    },
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    "href": "",
    "category_name": "CVE",
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    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
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