The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

The Easy Social Share Buttons plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 1.4.5. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Missing Authorization vulnerability in Supsystic Slider by Supsystic, Supsystic Social Share Buttons by Supsystic.This issue affects Slider by Supsystic: from n/a through 1.8.6; Social Share Buttons by Supsystic: from n/a through 2.2.9.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Inisev Social Media & Share Icons allows Stored XSS.This issue affects Social Media & Share Icons: from n/a through 2.9.1.

The Floating Social Buttons plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.5. This is due to missing or incorrect nonce validation on the floating_social_buttons_option() function. This makes it possible for unauthenticated attackers to update the plugins settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Missing Authorization vulnerability in appscreo Easy Social Share Buttons.This issue affects Easy Social Share Buttons: from n/a through 9.4.

Missing Authorization vulnerability in Social Share Pro Social Share Icons & Social Share Buttons.This issue affects Social Share Icons & Social Share Buttons: from n/a through 3.6.2.

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in appscreo Easy Social Share Buttons allows PHP Local File Inclusion.This issue affects Easy Social Share Buttons: from n/a through 9.4.

The Social Media Share Buttons & Social Sharing Icons WordPress plugin before 2.8.9 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

The Hubbub Lite – Fast, Reliable Social Sharing Buttons plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.33.1 via deserialization of untrusted input via the 'dpsp_maybe_unserialize' function. This makes it possible for authenticated attackers, with contributor access and above, to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.