{
    "id": "CVE-2019-9636",
    "published": "2019-03-08 21:29:00",
    "last_modified": "2026-06-17 02:44:05",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": null,
    "description": "Python 2.7.x through 2.7.16 and 3.x through 3.7.2 is affected by: Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization. The impact is: Information disclosure (credentials, cookies, etc. that are cached against a given hostname). The components are: urllib.parse.urlsplit, urllib.parse.urlparse. The attack vector is: A specially crafted URL could be incorrectly parsed to locate cookies or authentication data and send that information to a different host than when parsed correctly. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.7, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.9, v3.6.9rc1; v3.7.3, v3.7.3rc1, v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.",
    "epss_score": "0.08811",
    "epss_percentile": "0.95044",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-05 18:17:21",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), 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": "oracle",
            "product": "sun_zfs_storage_appliance_kit"
        },
        {
            "vendor": "python",
            "product": "python"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_desktop"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_eus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_aus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_eus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_tus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_workstation"
        },
        {
            "vendor": "redhat",
            "product": "openshift_container_platform"
        },
        {
            "vendor": "redhat",
            "product": "virtualization"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00092.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00097.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00024.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00050.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00042.html",
        "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html",
        "http://www.securityfocus.com/bid/107400",
        "https://access.redhat.com/errata/RHBA-2019:0763",
        "https://access.redhat.com/errata/RHBA-2019:0764",
        "https://access.redhat.com/errata/RHBA-2019:0959",
        "https://access.redhat.com/errata/RHSA-2019:0710",
        "https://access.redhat.com/errata/RHSA-2019:0765",
        "https://access.redhat.com/errata/RHSA-2019:0806",
        "https://access.redhat.com/errata/RHSA-2019:0902",
        "https://access.redhat.com/errata/RHSA-2019:0981",
        "https://access.redhat.com/errata/RHSA-2019:0997",
        "https://access.redhat.com/errata/RHSA-2019:1467",
        "https://access.redhat.com/errata/RHSA-2019:2980",
        "https://access.redhat.com/errata/RHSA-2019:3170",
        "https://bugs.python.org/issue36216",
        "https://github.com/python/cpython/pull/12201",
        "https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html",
        "https://lists.debian.org/debian-lts-announce/2019/06/msg00023.html",
        "https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html",
        "https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html"
    ]
}