{
    "id": "CVE-2012-5533",
    "published": "2012-11-24 20:55:04",
    "last_modified": "2026-06-16 23:46:57",
    "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-399",
    "description": "The http_request_split_value function in request.c in lighttpd before 1.4.32 allows remote attackers to cause a denial of service (infinite loop) via a request with a header containing an empty token, as demonstrated using the \"Connection: TE,,Keep-Alive\" header.",
    "epss_score": "0.12038",
    "epss_percentile": "0.96003",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-28 18:17:11",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "lighttpd",
            "product": "lighttpd"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "22902",
            "title": "lighttpd 1.4.31 - Denial of Service (PoC)",
            "date": "2012-11-22",
            "url": "https://www.exploit-db.com/exploits/22902"
        }
    ],
    "refs_list": [
        "http://download.lighttpd.net/lighttpd/security/lighttpd-1.4.31_fix_connection_header_dos.patch",
        "http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2012_01.txt",
        "http://lists.opensuse.org/opensuse-updates/2012-11/msg00044.html",
        "http://lists.opensuse.org/opensuse-updates/2014-01/msg00051.html",
        "http://marc.info/?l=bugtraq&m=141576815022399&w=2",
        "http://osvdb.org/87623",
        "http://packetstormsecurity.org/files/118282/Simple-Lighttpd-1.4.31-Denial-Of-Service.html",
        "http://secunia.com/advisories/51268",
        "http://secunia.com/advisories/51298",
        "http://www.exploit-db.com/exploits/22902",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2013:100",
        "http://www.openwall.com/lists/oss-security/2012/11/21/1",
        "http://www.securityfocus.com/bid/56619",
        "http://www.securitytracker.com/id?1027802",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/80213",
        "https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0345",
        "http://download.lighttpd.net/lighttpd/security/lighttpd-1.4.31_fix_connection_header_dos.patch",
        "http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2012_01.txt",
        "http://lists.opensuse.org/opensuse-updates/2012-11/msg00044.html",
        "http://lists.opensuse.org/opensuse-updates/2014-01/msg00051.html",
        "http://marc.info/?l=bugtraq&m=141576815022399&w=2",
        "http://osvdb.org/87623",
        "http://packetstormsecurity.org/files/118282/Simple-Lighttpd-1.4.31-Denial-Of-Service.html",
        "http://secunia.com/advisories/51268",
        "http://secunia.com/advisories/51298"
    ]
}