{
    "id": "CVE-2023-5631",
    "published": "2023-10-18 15:15:08",
    "last_modified": "2026-06-17 06:48:58",
    "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": "Roundcube before 1.4.15, 1.5.x before 1.5.5, and 1.6.x before 1.6.4 allows stored XSS via an HTML e-mail message with a crafted SVG document because of program/lib/Roundcube/rcube_washtml.php behavior. This could allow a remote attacker\n\nto load arbitrary JavaScript code.",
    "epss_score": "0.75873",
    "epss_percentile": "0.99513",
    "kev": 1,
    "kev_due": "2023-11-16",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:32:54",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2023-11-16."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "roundcube",
            "product": "webmail"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2023-5631",
        "date_added": "2023-10-26",
        "due_date": "2023-11-16",
        "vendor": "Roundcube",
        "product": "Webmail",
        "name": "Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "http://www.openwall.com/lists/oss-security/2023/11/01/1",
        "http://www.openwall.com/lists/oss-security/2023/11/01/3",
        "http://www.openwall.com/lists/oss-security/2023/11/17/2",
        "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1054079",
        "https://github.com/roundcube/roundcubemail/commit/41756cc3331b495cc0b71886984474dc529dd31d",
        "https://github.com/roundcube/roundcubemail/commit/6ee6e7ae301e165e2b2cb703edf75552e5376613",
        "https://github.com/roundcube/roundcubemail/issues/9168",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.4.15",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.5.5",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.6.4",
        "https://lists.debian.org/debian-lts-announce/2023/10/msg00035.html",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LK67Q46OIEGJCRQUBHKLH3IIJTBNGGX4/",
        "https://roundcube.net/news/2023/10/16/security-update-1.6.4-released",
        "https://roundcube.net/news/2023/10/16/security-updates-1.5.5-and-1.4.15",
        "https://www.debian.org/security/2023/dsa-5531",
        "http://www.openwall.com/lists/oss-security/2023/11/01/1",
        "http://www.openwall.com/lists/oss-security/2023/11/01/3",
        "http://www.openwall.com/lists/oss-security/2023/11/17/2",
        "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1054079",
        "https://github.com/roundcube/roundcubemail/commit/41756cc3331b495cc0b71886984474dc529dd31d",
        "https://github.com/roundcube/roundcubemail/commit/6ee6e7ae301e165e2b2cb703edf75552e5376613",
        "https://github.com/roundcube/roundcubemail/issues/9168",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.4.15",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.5.5",
        "https://github.com/roundcube/roundcubemail/releases/tag/1.6.4"
    ]
}