{
    "id": "CVE-2020-35730",
    "published": "2020-12-28 20:15:13",
    "last_modified": "2026-06-17 03:14:12",
    "cvss_score": "6.1",
    "cvss_severity": "MEDIUM",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
    "cwe": "CWE-79",
    "description": "An XSS issue was discovered in Roundcube Webmail before 1.2.13, 1.3.x before 1.3.16, and 1.4.x before 1.4.10. The attacker can send a plain text e-mail message, with JavaScript in a link reference element that is mishandled by linkref_addindex in rcube_string_replacer.php.",
    "epss_score": "0.32688",
    "epss_percentile": "0.98291",
    "kev": 1,
    "kev_due": "2023-07-13",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:26:49",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2023-07-13."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "roundcube",
            "product": "webmail"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2020-35730",
        "date_added": "2023-06-22",
        "due_date": "2023-07-13",
        "vendor": "Roundcube",
        "product": "Roundcube Webmail",
        "name": "Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=978491",
        "https://github.com/roundcube/roundcubemail/compare/1.4.9...1.4.10",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.2.13",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.3.16",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.4.10",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HCEU4BM5WGIDJWP6Z4PCH62ZMH57QYM2/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HMLIZWKMTRCLU7KZLEQHELS4INXJ7X5Q/",
        "https://roundcube.net/download/",
        "https://www.alexbirnberg.com/roundcube-xss.html",
        "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=978491",
        "https://github.com/roundcube/roundcubemail/compare/1.4.9...1.4.10",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.2.13",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.3.16",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.4.10",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HCEU4BM5WGIDJWP6Z4PCH62ZMH57QYM2/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HMLIZWKMTRCLU7KZLEQHELS4INXJ7X5Q/",
        "https://roundcube.net/download/",
        "https://www.alexbirnberg.com/roundcube-xss.html",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-35730"
    ]
}