{
    "id": "CVE-2003-0866",
    "published": "2003-11-17 05:00:00",
    "last_modified": "2026-06-16 22:03:06",
    "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": "The Catalina org.apache.catalina.connector.http package in Tomcat 4.0.x up to 4.0.3 allows remote attackers to cause a denial of service via several requests that do not follow the HTTP protocol, which causes Tomcat to reject later requests.",
    "epss_score": "0.34816",
    "epss_percentile": "0.98380",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:14:14",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "apache",
            "product": "tomcat"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "23245",
            "title": "Apache Tomcat 4.0.x - Non-HTTP Request Denial of Service",
            "date": "2003-10-15",
            "url": "https://www.exploit-db.com/exploits/23245"
        }
    ],
    "refs_list": [
        "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=215506",
        "http://secunia.com/advisories/30899",
        "http://secunia.com/advisories/30908",
        "http://sunsolve.sun.com/search/document.do?assetkey=1-26-239312-1",
        "http://tomcat.apache.org/security-4.html",
        "http://www.debian.org/security/2003/dsa-395",
        "http://www.securityfocus.com/bid/8824",
        "http://www.vupen.com/english/advisories/2008/1979/references",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/13429",
        "https://lists.apache.org/thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5%40%3Cdev.tomcat.apache.org%3E",
        "https://lists.apache.org/thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74%40%3Cdev.tomcat.apache.org%3E",
        "https://lists.apache.org/thread.html/rb71997f506c6cc8b530dd845c084995a9878098846c7b4eacfae8db3%40%3Cdev.tomcat.apache.org%3E",
        "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=215506",
        "http://secunia.com/advisories/30899",
        "http://secunia.com/advisories/30908",
        "http://sunsolve.sun.com/search/document.do?assetkey=1-26-239312-1",
        "http://tomcat.apache.org/security-4.html",
        "http://www.debian.org/security/2003/dsa-395",
        "http://www.securityfocus.com/bid/8824",
        "http://www.vupen.com/english/advisories/2008/1979/references",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/13429",
        "https://lists.apache.org/thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5%40%3Cdev.tomcat.apache.org%3E",
        "https://lists.apache.org/thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74%40%3Cdev.tomcat.apache.org%3E",
        "https://lists.apache.org/thread.html/rb71997f506c6cc8b530dd845c084995a9878098846c7b4eacfae8db3%40%3Cdev.tomcat.apache.org%3E"
    ]
}