SQL injection vulnerability in admin.php in the administration backend in Francisco Burzi PHP-Nuke 8.0 and earlier allows remote attackers to execute arbitrary SQL commands via the chnguid parameter.

SQL injection vulnerability in mainfile.php in PHP-Nuke 8.0 and earlier allows remote attackers to execute arbitrary SQL commands in the Top or News module via the lang parameter.

The cross-site request forgery (CSRF) protection in PHP-Nuke 8.0 and earlier does not ensure the SERVER superglobal is an array before validating the HTTPREFERER, which allows remote attackers to conduct CSRF attacks.

Incomplete blacklist vulnerability in mainfile.php in PHP-Nuke 7.9 and earlier allows remote attackers to conduct SQL injection attacks via (1) "//UNION " or (2) " UNION//" sequences, which are not rejected by the protection mechanism, as demonstrated by a SQL injection via the eid parameter in a search action in the Encyclopedia module in modules.php.

Multiple cross-site scripting (XSS) vulnerabilities in the Search Module in PHP-Nuke allow remote attackers to inject arbitrary web script or HTML via a trailing "<" instead of a ">" in (1) the onerror attribute of an IMG element, (2) the onload attribute of an IFRAME element, or (3) redirect users to other sites via the META tag.

Directory traversal vulnerability in mainfile.php in PHP-Nuke 8.0 and earlier allows remote attackers to read arbitrary files via a .. (dot dot) in the lang parameter.