{
    "id": "CVE-2011-4362",
    "published": "2011-12-24 19:55:05",
    "last_modified": "2026-06-16 23:34:50",
    "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": null,
    "description": "Integer signedness error in the base64_decode function in the HTTP authentication functionality (http_auth.c) in lighttpd 1.4 before 1.4.30 and 1.5 before SVN revision 2806 allows remote attackers to cause a denial of service (segmentation fault) via crafted base64 input that triggers an out-of-bounds read with a negative index.",
    "epss_score": "0.21106",
    "epss_percentile": "0.97506",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-27 18:17:10",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "lighttpd",
            "product": "lighttpd"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "18295",
            "title": "lighttpd - Denial of Service (PoC)",
            "date": "2011-12-31",
            "url": "https://www.exploit-db.com/exploits/18295"
        }
    ],
    "refs_list": [
        "http://archives.neohapsis.com/archives/bugtraq/2011-12/0167.html",
        "http://blog.pi3.com.pl/?p=277",
        "http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt",
        "http://jvn.jp/en/jp/JVN37417423/index.html",
        "http://redmine.lighttpd.net/issues/2370",
        "http://secunia.com/advisories/47260",
        "http://www.debian.org/security/2011/dsa-2368",
        "http://www.exploit-db.com/exploits/18295",
        "http://www.openwall.com/lists/oss-security/2011/11/29/13",
        "http://www.openwall.com/lists/oss-security/2011/11/29/8",
        "http://www.securitytracker.com/id?1026359",
        "https://bugzilla.redhat.com/show_bug.cgi?id=758624",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/71536",
        "http://archives.neohapsis.com/archives/bugtraq/2011-12/0167.html",
        "http://blog.pi3.com.pl/?p=277",
        "http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt",
        "http://jvn.jp/en/jp/JVN37417423/index.html",
        "http://redmine.lighttpd.net/issues/2370",
        "http://secunia.com/advisories/47260",
        "http://www.debian.org/security/2011/dsa-2368",
        "http://www.exploit-db.com/exploits/18295",
        "http://www.openwall.com/lists/oss-security/2011/11/29/13",
        "http://www.openwall.com/lists/oss-security/2011/11/29/8",
        "http://www.securitytracker.com/id?1026359",
        "https://bugzilla.redhat.com/show_bug.cgi?id=758624"
    ]
}