{
    "id": "CVE-2006-0805",
    "published": "2006-02-21 02:02:00",
    "last_modified": "2026-06-16 22:21:19",
    "cvss_score": "7.5",
    "cvss_severity": "HIGH",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
    "cwe": null,
    "description": "The CAPTCHA functionality in php-Nuke 6.0 through 7.9 uses fixed challenge/response pairs that only vary once per day based on the User Agent (HTTP_USER_AGENT), which allows remote attackers to bypass CAPTCHA controls by fixing the User Agent, performing a valid challenge/response, then replaying that pair in the random_num and gfx_check parameters.",
    "epss_score": "0.02996",
    "epss_percentile": "0.86952",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-08 18:17:06",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "francisco_burzi",
            "product": "php-nuke"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "27249",
            "title": "PHP-Nuke 7.x - CAPTCHA Bypass",
            "date": "2006-02-18",
            "url": "https://www.exploit-db.com/exploits/27249"
        }
    ],
    "refs_list": [
        "http://secunia.com/advisories/18936",
        "http://securityreason.com/securityalert/455",
        "http://www.securityfocus.com/archive/1/425394/100/0/threaded",
        "http://www.securityfocus.com/bid/16722",
        "http://www.waraxe.us/advisory-45.html",
        "http://secunia.com/advisories/18936",
        "http://securityreason.com/securityalert/455",
        "http://www.securityfocus.com/archive/1/425394/100/0/threaded",
        "http://www.securityfocus.com/bid/16722",
        "http://www.waraxe.us/advisory-45.html"
    ]
}