{
    "id": "CVE-2020-13671",
    "published": "2020-11-20 16:15:15",
    "last_modified": "2026-06-17 02:53:32",
    "cvss_score": "8.8",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-434",
    "description": "Drupal core does not properly sanitize certain filenames on uploaded files, which can lead to files being interpreted as the incorrect extension and served as the wrong MIME type or executed as PHP for certain hosting configurations. This issue affects: Drupal Drupal Core 9.0 versions prior to 9.0.8, 8.9 versions prior to 8.9.9, 8.8 versions prior to 8.8.11, and 7 versions prior to 7.74.",
    "epss_score": "0.35350",
    "epss_percentile": "0.98398",
    "kev": 1,
    "kev_due": "2022-07-18",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:26:40",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-07-18."
    },
    "products": [
        {
            "vendor": "drupal",
            "product": "drupal"
        },
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2020-13671",
        "date_added": "2022-01-18",
        "due_date": "2022-07-18",
        "vendor": "Drupal",
        "product": "Drupal core",
        "name": "Drupal core Un-restricted Upload of File",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/",
        "https://www.drupal.org/sa-core-2020-012",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/",
        "https://www.drupal.org/sa-core-2020-012",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13671"
    ]
}