The Landing Page Cat – Coming Soon Page, Maintenance Page & Squeeze Pages 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, 1.7.6. 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.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Matt Royal WooCommerce Maintenance Mode allows Reflected XSS.This issue affects WooCommerce Maintenance Mode: from n/a through 2.0.1.

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.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in SeedProd Coming Soon Page, Under Construction & Maintenance Mode by SeedProd allows Stored XSS.This issue affects Coming Soon Page, Under Construction & Maintenance Mode by SeedProd: from n/a through 6.17.4.

Authentication Bypass by Spoofing vulnerability in Peter Hardy-vanDoorn Maintenance Redirect allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Maintenance Redirect: from n/a through 2.0.1.

Incorrect Authorization vulnerability in Yassine Idrissi Maintenance & Coming Soon Redirect Animation allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Maintenance & Coming Soon Redirect Animation: from n/a through 2.1.3.

The WP Secure Maintenance WordPress plugin before 1.7 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 WP Maintenance plugin for WordPress is vulnerable to IP Address Spoofing in all versions up to, and including, 6.1.9.2 due to insufficient IP address validation and use of user-supplied HTTP headers as a primary method for IP retrieval. This makes it possible for unauthenticated attackers to bypass maintenance mode.

Authentication Bypass by Spoofing vulnerability in Acurax Under Construction / Maintenance Mode from Acurax allows Authentication Bypass.This issue affects Under Construction / Maintenance Mode from Acurax: from n/a through 2.6.

The Minimal Coming Soon – Coming Soon Page plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the validate_ajax, deactivate_ajax, and save_ajax functions in all versions up to, and including, 2.38. This makes it possible for authenticated attackers, with Subscriber-level access and above, to edit the license key, which could disable features of the plugin.