{
    "id": "CVE-2016-4000",
    "published": "2017-07-06 16:29:00",
    "last_modified": "2026-06-17 00:46:42",
    "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-502",
    "description": "Jython before 2.7.1rc1 allows attackers to execute arbitrary code via a crafted serialized PyFunction object.",
    "epss_score": "0.06206",
    "epss_percentile": "0.93327",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-06 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": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "jython_project",
            "product": "jython"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://bugs.jython.org/issue2454",
        "http://www.debian.org/security/2017/dsa-3893",
        "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html",
        "http://www.securityfocus.com/bid/105647",
        "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=864859",
        "https://hg.python.org/jython/file/v2.7.1rc1/NEWS",
        "https://hg.python.org/jython/rev/d06e29d100c0",
        "https://lists.apache.org/thread.html/0919ec1db20b1022f22b8e78f355667df74d6142b463ff17d03ad533%40%3Cdevnull.infra.apache.org%3E",
        "https://security-tracker.debian.org/tracker/CVE-2016-4000",
        "https://security.gentoo.org/glsa/201710-28",
        "https://snyk.io/vuln/SNYK-JAVA-ORGPYTHON-31451",
        "https://www.oracle.com/security-alerts/cpuapr2020.html",
        "https://www.oracle.com/security-alerts/cpujan2020.html",
        "https://www.oracle.com/security-alerts/cpujul2020.html",
        "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html",
        "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html",
        "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html",
        "http://bugs.jython.org/issue2454",
        "http://www.debian.org/security/2017/dsa-3893",
        "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html",
        "http://www.securityfocus.com/bid/105647",
        "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=864859",
        "https://hg.python.org/jython/file/v2.7.1rc1/NEWS",
        "https://hg.python.org/jython/rev/d06e29d100c0",
        "https://lists.apache.org/thread.html/0919ec1db20b1022f22b8e78f355667df74d6142b463ff17d03ad533%40%3Cdevnull.infra.apache.org%3E"
    ]
}