{
    "id": "CVE-2019-9023",
    "published": "2019-02-22 23:29:00",
    "last_modified": "2026-06-17 02:42:56",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-125",
    "description": "An issue was discovered in PHP before 5.6.40, 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.1. A number of heap-based buffer over-read instances are present in mbstring regular expression functions when supplied with invalid multibyte data. These occur in ext/mbstring/oniguruma/regcomp.c, ext/mbstring/oniguruma/regexec.c, ext/mbstring/oniguruma/regparse.c, ext/mbstring/oniguruma/enc/unicode.c, and ext/mbstring/oniguruma/src/utf32_be.c when a multibyte regular expression pattern contains invalid multibyte sequences.",
    "epss_score": "0.09317",
    "epss_percentile": "0.95242",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-05 18:17:21",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        },
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "netapp",
            "product": "storage_automation_store"
        },
        {
            "vendor": "opensuse",
            "product": "leap"
        },
        {
            "vendor": "php",
            "product": "php"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00083.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00104.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html",
        "http://www.securityfocus.com/bid/107156",
        "https://access.redhat.com/errata/RHSA-2019:2519",
        "https://access.redhat.com/errata/RHSA-2019:3299",
        "https://bugs.php.net/bug.php?id=77370",
        "https://bugs.php.net/bug.php?id=77371",
        "https://bugs.php.net/bug.php?id=77381",
        "https://bugs.php.net/bug.php?id=77382",
        "https://bugs.php.net/bug.php?id=77385",
        "https://bugs.php.net/bug.php?id=77394",
        "https://bugs.php.net/bug.php?id=77418",
        "https://security.netapp.com/advisory/ntap-20190321-0001/",
        "https://support.f5.com/csp/article/K06372014",
        "https://usn.ubuntu.com/3902-1/",
        "https://usn.ubuntu.com/3902-2/",
        "https://www.debian.org/security/2019/dsa-4398",
        "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00083.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00104.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html",
        "http://www.securityfocus.com/bid/107156",
        "https://access.redhat.com/errata/RHSA-2019:2519"
    ]
}