{
    "id": "CVE-2019-6706",
    "published": "2019-01-23 19:29:00",
    "last_modified": "2026-06-17 02:39:32",
    "cvss_score": "7.5",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "cwe": "CWE-416",
    "description": "Lua 5.3.5 has a use-after-free in lua_upvaluejoin in lapi.c. For example, a crash outcome might be achieved by an attacker who is able to trigger a debug.upvaluejoin call in which the arguments have certain relationships.",
    "epss_score": "0.17224",
    "epss_percentile": "0.97007",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-30 18:17:23",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        },
        {
            "vendor": "lua",
            "product": "lua"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "46246",
            "title": "Lua 5.3.5 - 'debug.upvaluejoin' Use After Free",
            "date": "2019-01-25",
            "url": "https://www.exploit-db.com/exploits/46246"
        }
    ],
    "refs_list": [
        "http://lua-users.org/lists/lua-l/2019-01/msg00039.html",
        "http://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.html",
        "https://access.redhat.com/security/cve/cve-2019-6706",
        "https://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdf",
        "https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e",
        "https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html",
        "http://lua-users.org/lists/lua-l/2019-01/msg00039.html",
        "http://packetstormsecurity.com/files/151335/Lua-5.3.5-Use-After-Free.html",
        "https://access.redhat.com/security/cve/cve-2019-6706",
        "https://github.com/Lua-Project/cve-analysis/blob/a43c9ccd00274b31fa2f24c6c8f20ce36655682d/CVE-2019-6706.pdf",
        "https://github.com/lua/lua/commit/89aee84cbc9224f638f3b7951b306d2ee8ecb71e",
        "https://lists.debian.org/debian-lts-announce/2023/06/msg00031.html"
    ]
}