The wp_remote_fopen function in WordPress before 2.1 allows remote attackers to cause a denial of service (bandwidth or thread consumption) via pingback service calls with a source URI that corresponds to a large file, which triggers a long download session without a timeout constraint.

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-trackback.php in WordPress 2.0.6 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 SQL commands via the tb_id parameter. 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 WordPress.

Cross-site request forgery (CSRF) vulnerability in the AdminPanel in WordPress 2.1.1 and earlier allows remote attackers to perform privileged actions as administrators, as demonstrated using the delete action in wp-admin/post.php. NOTE: this issue can be leveraged to perform cross-site scripting (XSS) attacks and steal cookies via the post parameter.

xmlrpc (xmlrpc.php) in WordPress 2.1.2, and probably earlier, allows remote authenticated users with the contributor role to bypass intended access restrictions and invoke the publish_posts functionality, which can be used to "publish a previously saved post."

SQL injection vulnerability in xmlrpc (xmlrpc.php) in WordPress 2.1.2, and probably earlier, allows remote authenticated users to execute arbitrary SQL commands via a string parameter value in an XML RPC mt.setPostCategories method call, related to the post_id variable.

Cross-site request forgery (CSRF) vulnerability in the wpcr_do_options_page function in WP Comment Remix plugin before 1.4.4 for WordPress allows remote attackers to perform unauthorized actions as administrators via a request that sets the wpcr_hidden_form_input parameter.

Cross-site scripting (XSS) vulnerability in wpcommentremix.php in WP Comment Remix plugin before 1.4.4 for WordPress allows remote attackers to inject arbitrary web script or HTML via the (1) replytotext, (2) quotetext, (3) originallypostedby, (4) sep, (5) maxtags, (6) tagsep, (7) tagheadersep, (8) taglabel, and (9) tagheaderlabel parameters.

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.

wordpress: XML-RPC interface vulnerability

The XML-RPC implementation (xmlrpc.php) in WordPress before 2.3.3, when registration is enabled, allows remote attackers to edit posts of other blog users via unknown vectors.

WP-Cumulus Plug-in 1.20 for WordPress, and possibly other versions, allows remote attackers to obtain sensitive information via a crafted request to wp-cumulus.php, probably without parameters, which reveals the installation path in an error message.

wordpress: multiple vulnerabilities

WordPress 2.7.1 places the username of a post's author in an HTML comment, which allows remote attackers to obtain sensitive information by reading the HTML source.

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.

wp-admin/upgrade.php in WordPress, probably 2.6.x, allows remote attackers to upgrade the application, and possibly cause a denial of service (application outage), via a direct request.

WordPress 2.2.x and 2.3.x allows remote attackers to obtain sensitive information via an invalid p parameter in an rss2 action to the default URI, which reveals the full path and the SQL database structure.

SQL injection vulnerability in options.php in WordPress 2.2.1 allows remote authenticated administrators to execute arbitrary SQL commands via the page_options parameter to (1) options-general.php, (2) options-writing.php, (3) options-reading.php, (4) options-discussion.php, (5) options-privacy.php, (6) options-permalink.php, (7) options-misc.php, and possibly other unspecified components.

Cross-site scripting (XSS) vulnerability in wp-register.php in WordPress 2.0 and 2.0.1 allows remote attackers to inject arbitrary web script or HTML via the user_email parameter.

WordPress: XSS via unescaped HTML URLs as author comments in the admin page

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.

wordpress-mu: XSS vulnerability in helper function for WPMU

Cross-site scripting (XSS) vulnerability in the choose_primary_blog function in wp-includes/wpmu-functions.php in WordPress MU (WPMU) before 2.7 allows remote attackers to inject arbitrary web script or HTML via the HTTP Host header.

SQL injection vulnerability in results.php in the Pyrmont plugin 2 for WordPress allows remote attackers to execute arbitrary SQL commands via the id parameter.