Unrestricted file upload vulnerability in the wp_check_filetype function in wp-includes/functions.php in WordPress before 2.8.6, when a certain configuration of the mod_mime module in the Apache HTTP Server is enabled, allows remote authenticated users to execute arbitrary code by posting an attachment with a multiple-extension filename, and then accessing this attachment via a direct request to a wp-content/uploads/ pathname, as demonstrated by a .php.jpg filename.
Cross-site scripting (XSS) vulnerability in wp-admin/press-this.php in WordPress before 2.8.6 allows remote authenticated users to inject arbitrary web script or HTML via the s parameter (aka the selection variable).
Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated "UTF-8" substrings, related to the mb_convert_encoding function in PHP.
Cross-site scripting (XSS) vulnerability in wp-admin/admin.php in NextGEN Gallery 0.96 and earlier plugin for Wordpress allows remote attackers to inject arbitrary web script or HTML via the picture description field in a page edit action.
SQL injection vulnerability in ahah/sf-profile.php in the Yellow Swordfish Simple Forum module for Wordpress allows remote attackers to execute arbitrary SQL commands via the u parameter. NOTE: this issue was disclosed by an unreliable researcher, so the details might be incorrect.
Cross-site scripting (XSS) vulnerability in the administrator interface in WordPress before 2.8.2 allows remote attackers to inject arbitrary web script or HTML via a comment author URL.
WP-Syntax plugin 0.9.1 and earlier for Wordpress, with register_globals enabled, allows remote attackers to execute arbitrary PHP code via the test_filter[wp_head] array parameter to test/index.php, which is used in a call to the call_user_func_array function.
Wordpress before 2.8.3 allows remote attackers to gain privileges via a direct request to (1) admin-footer.php, (2) edit-category-form.php, (3) edit-form-advanced.php, (4) edit-form-comment.php, (5) edit-link-category-form.php, (6) edit-link-form.php, (7) edit-page-form.php, and (8) edit-tag-form.php in wp-admin/.
Wordpress before 2.8.3 does not check capabilities for certain actions, which allows remote attackers to make unauthorized edits or additions via a direct request to (1) edit-comments.php, (2) edit-pages.php, (3) edit.php, (4) edit-category-form.php, (5) edit-link-category-form.php, (6) edit-tag-form.php, (7) export.php, (8) import.php, or (9) link-add.php in wp-admin/.
wp-login.php in WordPress 2.8.3 and earlier allows remote attackers to force a password reset for the first user in the database, possibly the administrator, via a key[] array variable in a resetpass (aka rp) action, which bypasses a check that assumes that $key is not an array.