Multiple directory traversal vulnerabilities in PHP iCalendar 2.0.1, 2.1, and 2.2 allow remote attackers to include arbitrary files via the (1) getdate and possibly other parameters used in the replace_files function in search.php and (2) $file variable as used in the parse function in functions/template.php.

Multiple SQL injection vulnerabilities in index.php in PHP Support Tickets 2.0 allow remote attackers to execute arbitrary SQL commands via the (1) username and (2) password fields, and (3) id parameter.

PHP file inclusion vulnerability in index.php in PHP iCalendar 2.0a2 through 2.0.1 allows remote attackers to execute arbitrary PHP code and include arbitrary local files via the phpicalendar cookie. NOTE: this is not a cross-site scripting (XSS) issue as claimed by the original researcher.

MyPHP Forum 1.0 allows remote attackers to spoof the username by modifying the (1) nbuser parameter to post.php or (2) sender parameter to privmsg.php.

Multiple SQL injection vulnerabilities in MyPHP Forum 1.0 allow remote attackers to execute arbitrary SQL commands via (1) the fid in forum.php, (2) the member parameter in member.php, (3) the email parameter in forgot.php, or (4) the nbuser or nbpass parameters in include.php. NOTE: it was later reported that vector 2 exists in 3.0 and earlier.

exif.c in PHP before 4.3.11 allows remote attackers to cause a denial of service (memory consumption and crash) via an EXIF header with a large IFD nesting level, which causes significant stack recursion.

The deserialization code in PHP before 4.3.10 and PHP 5.x up to 5.0.2 allows remote attackers to cause a denial of service and execute arbitrary code via untrusted data to the unserialize function that may trigger "information disclosure, double-free and negative reference index array underflow" results.

Buffer overflow in the exif_read_data function in PHP before 4.3.10 and PHP 5.x up to 5.0.2 allows remote attackers to execute arbitrary code via a long section name in an image file.

The check_referer() function in Formmail.php 5.0 and earlier allows remote attackers to bypass access restrictions via an empty or spoofed HTTP Referer, as demonstrated using an application on the same web server that contains a cross-site scripting (XSS) issue.

The strip_tags function in PHP 4.x up to 4.3.7, and 5.x up to 5.0.0RC3, does not filter null (\0) characters within tag names when restricting input to allowed tags, which allows dangerous tags to be processed by web browsers such as Internet Explorer and Safari, which ignore null characters and facilitate the exploitation of cross-site scripting (XSS) vulnerabilities.