{
    "id": "CVE-2009-2473",
    "published": "2009-08-21 17:30:00",
    "last_modified": "2026-06-16 23:09:31",
    "cvss_score": "4.3",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
    "cwe": "CWE-399",
    "description": "neon before 0.28.6, when expat is used, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.",
    "epss_score": "0.08437",
    "epss_percentile": "0.94819",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-28 18:17:08",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "webdav",
            "product": "neon"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "10206",
            "title": "Expat 2.0.1 - UTF-8 Character XML Parsing Remote Denial of Service",
            "date": "2009-11-12",
            "url": "https://www.exploit-db.com/exploits/10206"
        }
    ],
    "refs_list": [
        "http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html",
        "http://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html",
        "http://lists.manyfish.co.uk/pipermail/neon/2009-August/001045.html",
        "http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html",
        "http://rhn.redhat.com/errata/RHSA-2013-0131.html",
        "http://secunia.com/advisories/36371",
        "http://support.apple.com/kb/HT4435",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2009:221",
        "http://www.vupen.com/english/advisories/2009/2341",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/52633",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9461",
        "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html",
        "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00945.html",
        "http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html",
        "http://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html",
        "http://lists.manyfish.co.uk/pipermail/neon/2009-August/001045.html",
        "http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html",
        "http://rhn.redhat.com/errata/RHSA-2013-0131.html",
        "http://secunia.com/advisories/36371",
        "http://support.apple.com/kb/HT4435",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2009:221",
        "http://www.vupen.com/english/advisories/2009/2341",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/52633",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9461",
        "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html"
    ]
}