{
    "id": "CVE-2020-13753",
    "published": "2020-07-14 14:15:17",
    "last_modified": "2026-06-17 02:53:35",
    "cvss_score": "10.0",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
    "cwe": "CWE-20",
    "description": "The bubblewrap sandbox of WebKitGTK and WPE WebKit, prior to 2.28.3, failed to properly block access to CLONE_NEWUSER and the TIOCSTI ioctl. CLONE_NEWUSER could potentially be used to confuse xdg-desktop-portal, which allows access outside the sandbox. TIOCSTI can be used to directly execute commands outside the sandbox by writing to the controlling terminal's input buffer, similar to CVE-2017-5226.",
    "epss_score": "0.03266",
    "epss_percentile": "0.88071",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-10 18:17:22",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (10), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        },
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "opensuse",
            "product": "leap"
        },
        {
            "vendor": "webkitgtk",
            "product": "webkitgtk"
        },
        {
            "vendor": "wpewebkit",
            "product": "wpe_webkit"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00074.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GER2ATKZXDHM7FFYJH67ZPNZZX5VOUVM/",
        "https://security.gentoo.org/glsa/202007-11",
        "https://trac.webkit.org/changeset/262368/webkit",
        "https://usn.ubuntu.com/4422-1/",
        "https://www.debian.org/security/2020/dsa-4724",
        "https://www.openwall.com/lists/oss-security/2020/07/10/1",
        "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00074.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GER2ATKZXDHM7FFYJH67ZPNZZX5VOUVM/",
        "https://security.gentoo.org/glsa/202007-11",
        "https://trac.webkit.org/changeset/262368/webkit",
        "https://usn.ubuntu.com/4422-1/",
        "https://www.debian.org/security/2020/dsa-4724",
        "https://www.openwall.com/lists/oss-security/2020/07/10/1"
    ]
}