{
    "id": "CVE-2016-3953",
    "published": "2018-02-06 18:29:00",
    "last_modified": "2026-06-17 00:46:37",
    "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-798",
    "description": "The sample web application in web2py before 2.14.2 might allow remote attackers to execute arbitrary code via vectors involving use of a hardcoded encryption key when calling the session.connect function.",
    "epss_score": "0.03340",
    "epss_percentile": "0.88331",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-09 18:17:16",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "web2py",
            "product": "web2py"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/",
        "https://github.com/web2py/web2py/blob/R-2.14.1/applications/examples/models/session.py",
        "https://usn.ubuntu.com/4030-1/",
        "https://devco.re/blog/2017/01/03/web2py-unserialize-code-execution-CVE-2016-3957/",
        "https://github.com/web2py/web2py/blob/R-2.14.1/applications/examples/models/session.py",
        "https://usn.ubuntu.com/4030-1/"
    ]
}