PHP remote file inclusion vulnerability in formmail.inc.php for Form Mail Script 2.3 and earlier allows remote attackers to execute arbitrary PHP code by modifying the script_root to reference a URL on a remote web server that contains the code.

PHP remote file inclusion vulnerability in tell_a_friend.inc.php for Tell A Friend Script 2.7 before 20050305 allows remote attackers to execute arbitrary PHP code by modifying the script_root parameter to reference a URL on a remote web server that contains the code. NOTE: it was later reported that 2.4 is also affected.

Dynamic variable evaluation vulnerability in index.php in Stadtaus Guestbook Script 1.7 and earlier, when register_globals is enabled, allows remote attackers to modify arbitrary program variables via parameters, which are evaluated as PHP variable variables, as demonstrated by performing PHP remote file inclusion using the include_files array parameter.

Multiple PHP remote file inclusion vulnerabilities in Guestbook Script 1.9 allow remote attackers to execute arbitrary PHP code via a URL in the script_root parameter to (1) delete.php, (2) edit.php, or (3) inc/common.inc.php; or (4) database.php, (5) entries.php, (6) index.php, (7) logout.php, or (8) settings.php in admin/. NOTE: a third party disputes this vulnerability, noting that these scripts defend against direct requests