{
    "id": "CVE-2015-8866",
    "published": "2016-05-22 01:59:05",
    "last_modified": "2026-06-17 00:35:23",
    "cvss_score": "9.6",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
    "cwe": "CWE-611",
    "description": "ext/libxml/libxml.c in PHP before 5.5.22 and 5.6.x before 5.6.6, when PHP-FPM is used, does not isolate each thread from libxml_disable_entity_loader changes in other threads, which allows remote attackers to conduct XML External Entity (XXE) and XML Entity Expansion (XEE) attacks via a crafted XML document, a related issue to CVE-2015-5161.",
    "epss_score": "0.04171",
    "epss_percentile": "0.90635",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-08 18:17:15",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.6), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        },
        {
            "vendor": "opensuse",
            "product": "leap"
        },
        {
            "vendor": "opensuse",
            "product": "opensuse"
        },
        {
            "vendor": "php",
            "product": "php"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_module_for_web_scripting"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_software_development_kit"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=de31324c221c1791b26350ba106cc26bad23ace9",
        "http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00031.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00033.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00056.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2750.html",
        "http://www.openwall.com/lists/oss-security/2016/04/24/1",
        "http://www.php.net/ChangeLog-5.php",
        "http://www.securityfocus.com/bid/87470",
        "http://www.ubuntu.com/usn/USN-2952-1",
        "http://www.ubuntu.com/usn/USN-2952-2",
        "https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1509817",
        "https://bugs.php.net/bug.php?id=64938",
        "http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=de31324c221c1791b26350ba106cc26bad23ace9",
        "http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00031.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00033.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00056.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2750.html",
        "http://www.openwall.com/lists/oss-security/2016/04/24/1",
        "http://www.php.net/ChangeLog-5.php",
        "http://www.securityfocus.com/bid/87470",
        "http://www.ubuntu.com/usn/USN-2952-1",
        "http://www.ubuntu.com/usn/USN-2952-2",
        "https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1509817",
        "https://bugs.php.net/bug.php?id=64938"
    ]
}