details.php in BtiTracker before 1.4.5, when torrent viewing is disabled for guests, allows remote attackers to bypass protection mechanisms via a direct request, as demonstrated by (1) reading the details of an arbitrary torrent and (2) modifying a torrent owned by a guest.

SQL injection vulnerability in include/functions.php in BtiTracker before 1.4.5 allows remote attackers to execute arbitrary SQL commands via unspecified vectors.

Multiple cross-site scripting (XSS) vulnerabilities in BtiTracker before 1.4.5 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors to (1) account.php, (2) moresmiles.php, or (3) recover.php; or (4) the “to” parameter to usercp.php.

classes/Url.php in Justin Hagstrom AutoIndex PHP Script before 2.2.4 allows remote attackers to cause a denial of service (CPU and memory consumption) via a %00 sequence in the dir parameter to index.php, which triggers an erroneous “recursive calculation.”

Cross-site scripting (XSS) vulnerability in index.php in Justin Hagstrom AutoIndex PHP Script before 2.2.3 allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO (PHP_SELF).

Multiple cross-site scripting (XSS) vulnerabilities in X7 Chat 2.0.4, 2.0.5, and possibly other versions allow remote attackers to inject arbitrary web script or HTML via the (1) room parameter to sources/frame.php, the (2) theme_c parameter to help/index.php, or the (3) INSTALL_X7CHATVERSION parameter to upgradev1.php.