{
    "id": "CVE-2017-8923",
    "published": "2017-05-12 20:29:00",
    "last_modified": "2026-06-17 01:27:12",
    "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-787",
    "description": "The zend_string_extend function in Zend/zend_string.h in PHP through 7.1.5 does not prevent changes to string objects that result in a negative length, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact by leveraging a script's use of .= with a long string.",
    "epss_score": "0.07191",
    "epss_percentile": "0.94127",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-05 18:17:17",
    "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://www.securityfocus.com/bid/98518",
        "https://bugs.php.net/bug.php?id=74577",
        "http://www.securityfocus.com/bid/98518",
        "https://bugs.php.net/bug.php?id=74577",
        "https://security.netapp.com/advisory/ntap-20241227-0007/"
    ]
}