SQL injection vulnerability in userlogin.php in Phorum 3.4.7 allows remote attackers to execute arbitrary SQL commands via doubly hex-encoded characters such as "%2527", which is translated to "'", as demonstrated using the phorum_uriauth parameter to list.php.

Multiple SQL injection vulnerabilities in Phorum 5.0.11 and earlier allow remote attackers to modify SQL statements via (1) the query string in read.php or (2) unknown vectors in file.php.

Multiple SQL injection vulnerabilities in Phorum before 5.1.22 allow remote attackers to execute arbitrary SQL commands via (1) a modified recipients parameter name in (a) pm.php; (2) the curr parameter to the (b) badwords (aka censorlist) or (c) banlist module in admin.php; or (3) the "Edit groups / Add group" field in the (d) groups module in admin.php.

PHP remote file inclusion vulnerability in common.php in Phorum 3.2.11 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the db_file parameter. NOTE: CVE disputes this vulnerability because db_file is defined before use

SQL injection vulnerability in search.php in Phorum 5.1.14 and earlier allows remote attackers to execute arbitrary SQL commands via the page parameter. NOTE: the vendor has disputed this report, stating "If a non positive integer or non-integer is used for the page parameter for a search URL, the search query will use a negative number for the LIMIT clause. This causes the query to break, showing no results. It IS NOT however a sql injection error." While the original report is from a researcher with mixed accuracy, as of 20060703, CVE does not have any additional information regarding this issue

PHP remote file inclusion vulnerability in common.php in PHORUM 5.1.13 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the PHORUM[http_path] parameter. NOTE: this issue has been disputed by the vendor, who states "common.php is checked on the very first line of non-comment code that it is not being called directly. It has been this way in all 5.x version of Phorum." CVE analysis concurs with the vendor

Phorum allows remote attackers to hijack sessions of other users by stealing and replaying the session hash in the phorum_uriauth parameter, as demonstrated using profile.php. NOTE: the affected version was reported to be 4.3.7, but this may be erroneous.

SQL injection vulnerability in register.php for Phorum 3.4.5 and earlier allows remote attackers to execute arbitrary SQL commands via the hide_email parameter.

Phorum 3.3.2a allows remote attackers to execute arbitrary commands via an HTTP request to (1) plugin.php, (2) admin.php, or (3) del.php that modifies the PHORUM[settings_dir] variable to point to a directory that contains a PHP file with the commands.

SQL injection vulnerability in read.php3 and other scripts in Phorum 3.0.7 allows remote attackers to execute arbitrary SQL queries via the sSQL parameter.

SQL injection vulnerability in register.php in Phorum before 3.4.6 allows remote attackers to execute arbitrary SQL commands via the hide_email parameter.

Cross-site request forgery (CSRF) vulnerability in include/admin/banlist.php in Phorum before 5.1.22 allows remote attackers to perform unauthorized banlist deletions as an administrator via the delete parameter.