{
    "id": "CVE-2009-0478",
    "published": "2009-02-08 22:30:00",
    "last_modified": "2026-06-16 23:05:07",
    "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-20",
    "description": "Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.",
    "epss_score": "0.71986",
    "epss_percentile": "0.99412",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:16:28",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "squid",
            "product": "squid"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "8021",
            "title": "Squid < 3.1 5 - HTTP Version Number Parsing Denial of Service",
            "date": "2009-02-09",
            "url": "https://www.exploit-db.com/exploits/8021"
        }
    ],
    "refs_list": [
        "http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html",
        "http://secunia.com/advisories/33731",
        "http://secunia.com/advisories/34467",
        "http://security.gentoo.org/glsa/glsa-200903-38.xml",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2009:034",
        "http://www.securityfocus.com/archive/1/500653/100/0/threaded",
        "http://www.securityfocus.com/bid/33604",
        "http://www.securitytracker.com/id?1021684",
        "http://www.squid-cache.org/Advisories/SQUID-2009_1.txt",
        "http://www.squid-cache.org/Versions/v2/2.7/changesets/12432.patch",
        "https://bugzilla.redhat.com/show_bug.cgi?id=484246",
        "https://www.exploit-db.com/exploits/8021",
        "http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html",
        "http://secunia.com/advisories/33731",
        "http://secunia.com/advisories/34467",
        "http://security.gentoo.org/glsa/glsa-200903-38.xml",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2009:034",
        "http://www.securityfocus.com/archive/1/500653/100/0/threaded",
        "http://www.securityfocus.com/bid/33604",
        "http://www.securitytracker.com/id?1021684",
        "http://www.squid-cache.org/Advisories/SQUID-2009_1.txt",
        "http://www.squid-cache.org/Versions/v2/2.7/changesets/12432.patch",
        "https://bugzilla.redhat.com/show_bug.cgi?id=484246",
        "https://www.exploit-db.com/exploits/8021"
    ]
}