{
    "id": "CVE-2018-20354",
    "published": "2019-06-10 17:29:02",
    "last_modified": "2026-06-17 01:52:40",
    "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-416",
    "description": "An invalid read of 8 bytes due to a use-after-free vulnerability during a \"return\" in the mg_http_get_proto_data function in mongoose.c in Cesanta Mongoose Embedded Web Server Library 6.13 and earlier allows a denial of service (application crash) or remote code execution.",
    "epss_score": "0.03574",
    "epss_percentile": "0.89072",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-09 18:17:20",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "cesanta",
            "product": "mongoose"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://github.com/insi2304/mongoose-6.13-fuzz/blob/master/Simplest_Web_Server_Use_After_Free-read-mg_http_get_proto_data.png",
        "https://github.com/insi2304/mongoose-6.13-fuzz/blob/master/Simplest_Web_Server_Use_After_Free-read-mg_http_get_proto_data.png"
    ]
}