{
    "id": "CVE-2016-4344",
    "published": "2016-05-22 01:59:18",
    "last_modified": "2026-06-17 00:47:23",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-190",
    "description": "Integer overflow in the xml_utf8_encode function in ext/xml/xml.c in PHP before 7.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a long argument to the utf8_encode function, leading to a heap-based buffer overflow.",
    "epss_score": "0.05175",
    "epss_percentile": "0.92230",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-07 18:17:14",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "php",
            "product": "php"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://php.net/ChangeLog-7.php",
        "http://www.openwall.com/lists/oss-security/2016/04/28/2",
        "https://bugs.php.net/bug.php?id=71637",
        "http://php.net/ChangeLog-7.php",
        "http://www.openwall.com/lists/oss-security/2016/04/28/2",
        "https://bugs.php.net/bug.php?id=71637"
    ]
}