The Shareaholic plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'shareaholic' shortcode in versions up to, and including, 9.7.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Shareaholic Similar Posts plugin <= 3.1.6 versions.

The Professional Social Sharing Buttons, Icons & Related Posts WordPress plugin before 9.7.6 does not have proper authorisation check in one of the AJAX action, available to unauthenticated (in v < 9.7.5) and author+ (in v9.7.5) users, allowing them to call it and retrieve various information such as the list of active plugins, various version like PHP, cURL, WP etc.

The Similar Posts WordPress plugin through 3.1.5 allow high privilege users to execute arbitrary PHP code in an hardened environment (ie with DISALLOW_FILE_EDIT, DISALLOW_FILE_MODS and DISALLOW_UNFILTERED_HTML set to true) via the 'widget_rrm_similar_posts_condition' widget setting of the plugin.

Cross-site scripting (XSS) vulnerability in admin.php in the Shareaholic plugin before 7.6.1.0 for WordPress allows remote authenticated users to inject arbitrary web script or HTML via the location[id] parameter in a shareaholic_add_location action to wp-admin/admin-ajax.php.

Cross-site request forgery (CSRF) vulnerability in the Shareaholic SexyBookmarks plugin 6.1.4.0 for WordPress allows remote attackers to hijack the authentication of users for requests that "manipulate plugin settings."