Cross-site scripting (XSS) vulnerability in Class-1 Forum 0.24.4 and 0.23.2, and Clever Copy with forums installed, allows remote attackers to inject arbitrary web script or HTML via the (1) viewuser_id or (2) group parameter to users.php.

Multiple SQL injection vulnerabilities in Class-1 Forum 0.24.4 and 0.23.2, and Clever Copy with forums installed, allow remote attackers to modify SQL statements via the (1) id parameter to viewattach.php, (2) viewuser_id parameter to users.php, or the (3) id or (4) forum parameter to viewforum.php.

Cross-site scripting (XSS) vulnerability in Clever Copy 2.0 and 2.0a allows remote attackers to inject arbitrary web script or HTML via the searchtype or searchterm parameters to (1) results.php or (2) categorysearch.php.

Clever Copy 2.0 and 2.0a allows remote attackers to obtain the full path of the web root via a direct request to (1) ticker.php, (2) menu.php, (3) banned.php, (4) endlayout.php, (5) randomhlinesblock.php, (6) showlast.php, (7) showlast5class1.php, (8) showlast5phorum.php, (9) showlast5phorumblock.php, (10) showlastforumbb2.php, or (11) showlastforumbb2block.php.

Cross-site scripting (XSS) vulnerability in Clever Copy 2.0 and 2.0a allows remote attackers to inject arbitrary web script or HTML via the yr parameter to calendar.php.

SQL injection vulnerability in mailarticle.php in Clever Copy 3.0 and earlier allows remote attackers to execute arbitrary SQL commands via the ID parameter.

Cross-site scripting (XSS) vulnerability in Clever Copy 2.0, 2.0a, and 3.0 allows remote attackers to inject arbitrary web script or HTML via the (1) Referer or (2) X-Forwarded-For headers in an HTTP request, which are not properly handled when the administrator accesses Site Stats.

Cross-site scripting (XSS) vulnerability in default.php in Clever Copy 3.0 allows remote attackers to inject arbitrary web script or HTML via the Subject field when sending private messages (privatemessages.php). NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Magus Perde Clever Copy 3.0 and earlier stores sensitive information under the web root with insufficient access control, which allows remote attackers to view the database username and password via a direct request for connect.inc.