{
    "id": "CVE-2009-4017",
    "published": "2009-11-24 00:30:00",
    "last_modified": "2026-06-16 23:12:50",
    "cvss_score": "5.0",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
    "cwe": "CWE-770",
    "description": "PHP before 5.2.12 and 5.3.x before 5.3.1 does not restrict the number of temporary files created when handling a multipart/form-data POST request, which allows remote attackers to cause a denial of service (resource exhaustion), and makes it easier for remote attackers to exploit local file inclusion vulnerabilities, via multiple requests, related to lack of support for the max_file_uploads directive.",
    "epss_score": "0.12041",
    "epss_percentile": "0.96006",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-29 18:17:08",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "apple",
            "product": "mac_os_x"
        },
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "php",
            "product": "php"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "10242",
            "title": "PHP < 5.3.1 - 'MultiPart/form-data' Denial of Service",
            "date": "2009-11-27",
            "url": "https://www.exploit-db.com/exploits/10242"
        }
    ],
    "refs_list": [
        "http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html",
        "http://marc.info/?l=bugtraq&m=127680701405735&w=2",
        "http://news.php.net/php.announce/79",
        "http://seclists.org/fulldisclosure/2009/Nov/228",
        "http://secunia.com/advisories/37482",
        "http://secunia.com/advisories/37821",
        "http://secunia.com/advisories/40262",
        "http://secunia.com/advisories/41480",
        "http://secunia.com/advisories/41490",
        "http://support.apple.com/kb/HT4077",
        "http://www.acunetix.com/blog/websecuritynews/php-multipartform-data-denial-of-service/",
        "http://www.debian.org/security/2009/dsa-1940",
        "http://www.itrc.hp.com/service/cki/docDisplay.do?docId=emr_na-c02512995",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2009:303",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2009:305",
        "http://www.openwall.com/lists/oss-security/2009/11/20/2",
        "http://www.openwall.com/lists/oss-security/2009/11/20/7",
        "http://www.php.net/ChangeLog-5.php",
        "http://www.php.net/releases/5_2_12.php",
        "http://www.php.net/releases/5_3_1.php",
        "http://www.securityfocus.com/archive/1/507982/100/0/threaded",
        "http://www.vupen.com/english/advisories/2009/3593",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/54455",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10483",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6667"
    ]
}