Cross-site scripting (XSS) vulnerability in ViewTopic.php in phpBB, possibly 2.0.6c and earlier, allows remote attackers to execute arbitrary script or HTML as other users via the postorder parameter.
viewtopic.php in phpBB 2.x before 2.0.11 improperly URL decodes the highlight parameter when extracting words and phrases to highlight, which allows remote attackers to execute arbitrary PHP code by double-encoding the highlight value so that special characters are inserted into the result, which is then processed by PHP exec, as exploited by the Santy.A worm.
PhpBB 2.0.8 allows remote attackers to gain sensitive information via an invalid (1) category_rows parameter to index.php, (2) faq parameter to faq.php, or (3) ranksrow parameter to profile.php, which reveal the full path in an error message.
Multiple cross-site scripting (XSS) vulnerabilities in PhpBB 2.0.8 allow remote attackers to inject arbitrary web script or HTML via (1) the cat_title parameter in index.php, (2) the faq[0][0] parameter in lang_faq.php as accessible from faq.php, or (3) the faq[0][0] parameter in lang_bbcode.php as accessible from faq.php.
Cross-site scripting (XSS) vulnerability in search.php for PhpBB 2.0.4 and 2.0.9 allows remote attackers to inject arbitrary HTMl or web script via the search_author parameter.
PHP remote file inclusion vulnerability in album_portal.php in phpBB modified by Przemo 1.8 allows remote attackers to execute arbitrary PHP code via the phpbb_root_path parameter.
SQL injection vulnerability in page_header.php in phpBB 2.0, 2.0.1 and 2.0.2 allows remote attackers to brute force user passwords and possibly gain unauthorized access to forums via the forum_id parameter to index.php.
Directory traversal vulnerability in auth.php for PhpBB 1.4.0 through 1.4.4 allows remote attackers to read and include arbitrary files via .. (dot dot) sequences followed by NULL (%00) characters in CGI parameters, as demonstrated using the lang parameter in prefs.php.
SQL injection vulnerability in groupcp.php for phpBB 2.0.6 and earlier allows group moderators to perform unauthorized activities via the sql_in parameter.