SQL injection vulnerability in cp.php in DeluxeBB 1.07 and earlier allows remote attackers to execute arbitrary SQL commands via the xmsn parameter.

DeluxeBB 1.07 and earlier does not properly handle a username composed of a single space character, which allows remote authenticated users to login as the "space" user, post as the guest user, and block the ability of an administrator to ban the "space" user.

Multiple cross-site scripting (XSS) vulnerabilities in DeluxeBB before 1.08 allow remote attackers to inject arbitrary web script or HTML via the (1) membercookie cookie in header.php and the (2) redirect parameter in misc.php.

SQL injection vulnerability in DeluxeBB 1.07 and earlier allows remote attackers to bypass authentication, spoof users, and modify settings via the (1) memberpw and (2) membercookie cookies.

DeluxeBB 1.07 and earlier allows remote attackers to overwrite the (1) _GET, (2) _POST, (3) _ENV, and (4) _SERVER variables via the _COOKIE (aka COOKIE) variable, which can overwrite the other variables during an extract function call, probably leading to multiple security vulnerabilities, aka "pollution of the global namespace."

DeluxeBB 1.07 and earlier allows remote attackers to bypass SQL injection protection mechanisms via the login variable and certain other variables, by using lowercase "union select" or possibly other statements that do not match the uppercase "UNION SELECT."

SQL injection vulnerability in newpost.php in DeluxeBB 1.3 and earlier, when magic_quotes_gpc is disabled, allows remote attackers to execute arbitrary SQL commands via the membercookie cookie when adding a new thread.

SQL injection vulnerability in misc.php in DeluxeBB 1.3, and possibly earlier, when magic_quotes_gpc is disabled, allows remote attackers to execute arbitrary SQL commands via the xthedateformat parameter in a register action, a different vector than CVE-2005-2989, CVE-2006-2503, and CVE-2009-1033.

DeluxeBB 1.3 allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by header_html.php.