{
    "id": "CVE-2019-20790",
    "published": "2020-04-27 14:15:11",
    "last_modified": "2026-06-17 02:31:12",
    "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": "CWE-290",
    "description": "OpenDMARC through 1.3.2 and 1.4.x, when used with pypolicyd-spf 2.0.2, allows attacks that bypass SPF and DMARC authentication in situations where the HELO field is inconsistent with the MAIL FROM field.",
    "epss_score": "0.02640",
    "epss_percentile": "0.85205",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-13 18:17:22",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "pypolicyd-spf_project",
            "product": "pypolicyd-spf"
        },
        {
            "vendor": "trusteddomain",
            "product": "opendmarc"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://bugs.launchpad.net/pypolicyd-spf/+bug/1838816",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2D4JGHMALEJEWWG56DKR5OZB22TK7W5B/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBOGOQOK3TIWWJV66MW5YWNRJAFFYGR5/",
        "https://sourceforge.net/p/opendmarc/tickets/235/",
        "https://www.usenix.org/system/files/sec20fall_chen-jianjun_prepub_0.pdf",
        "https://bugs.launchpad.net/pypolicyd-spf/+bug/1838816",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2D4JGHMALEJEWWG56DKR5OZB22TK7W5B/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBOGOQOK3TIWWJV66MW5YWNRJAFFYGR5/",
        "https://sourceforge.net/p/opendmarc/tickets/235/",
        "https://www.usenix.org/system/files/sec20fall_chen-jianjun_prepub_0.pdf"
    ]
}