Unrestricted file upload vulnerability in signup.php in e107 0.7.8 and earlier, when photograph upload is enabled, allows remote attackers to upload and execute arbitrary PHP code via a filename with a double extension such as .php.jpg.

Multiple SQL injection vulnerabilities in the admin section in e107 0.7.5 allow remote authenticated administrative users to execute arbitrary SQL commands via the (1) linkopentype, (2) linkrender, (3) link_class, and (4) link_id parameters in (a) links.php; the (5) searchquery parameter in (b) users.php; and the (6) download_category_class parameter in (c) download.php. NOTE: an e107 developer has disputed the significance of the vulnerability, stating that "If your admins are injecting you, you might want to reconsider their access."

e107 0.75 and earlier does not properly unset variables when the input data includes a numeric parameter with a value matching an alphanumeric parameter's hash value, which allows remote attackers to execute arbitrary PHP code via the tinyMCE_imglib_include image/jpeg parameter in e107_handlers/tiny_mce/plugins/ibrowser/ibrowser.php, as demonstrated by a multipart/form-data request. NOTE: it could be argued that this vulnerability is due to a bug in the unset PHP command (CVE-2006-3017) and the proper fix should be in PHP; if so, then this should not be treated as a vulnerability in e107.

Multiple cross-site scripting (XSS) vulnerabilities in e107 0.7.5 allow remote attackers to inject arbitrary web script or HTML via the (1) ep parameter to search.php and the (2) subject parameter in comment.php (aka the Subject field when posting a comment).

SQL injection vulnerability in class2.php in e107 0.7.2 and earlier allows remote attackers to execute arbitrary SQL commands via a cookie as defined in $pref['cookie_name'].

Cross-site scripting (XSS) vulnerability in Chatbox Plugin 1.0 in e107 0.7.2 allows remote attackers to inject arbitrary HTML or web script via a Chatbox, as demonstrated using a SCRIPT element.