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.

The ConvertKit – Email Newsletter, Email Marketing, Subscribers and Landing Pages plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the tag_subscriber function in all versions up to, and including, 2.4.9. This makes it possible for unauthenticated attackers to subscribe users to tags. Financial damages may occur to site owners if their API quota is exceeded.

The ConvertKit – Email Newsletter, Email Marketing, Subscribers and Landing Pages plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the tag_subscriber function in all versions up to, and including, 2.4.9. This makes it possible for unauthenticated attackers to subscribe users to tags. Financial damages may occur to site owners if their API quota is exceeded.

The Social Link Pages: link-in-bio landing pages for your social media profiles plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the import_link_pages() function in all versions up to, and including, 1.6.9. This makes it possible for unauthenticated attackers to inject arbitrary pages and malicious web scripts.

Cross-Site Request Forgery (CSRF) vulnerability in Landingi Landingi Landing Pages.This issue affects Landingi Landing Pages: from n/a through 3.1.1.

Cross-Site Request Forgery (CSRF) vulnerability in Keap Keap Landing Pages plugin <= 1.4.2 versions.

The ConvertKit WordPress plugin before 2.2.1 does not escape a parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

A vulnerability, which was classified as problematic, has been found in Landing Pages Plugin up to 1.8.7 on WordPress. Affected by this issue is some unknown functionality. The manipulation leads to cross site scripting. The attack may be launched remotely. Upgrading to version 1.8.8 is able to address this issue. The name of the patch is c8e22c1340c11fedfb0a0a67ea690421bdb62b94. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-222320.

The ConvertKit WordPress plugin before 2.0.5 does not validate and escapes some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as a contributor to perform Stored Cross-Site Scripting attacks, which could be used against high-privilege users such as admins.

The Landing Pages plugin before 1.9.2 for WordPress allows remote attackers to execute arbitrary code via the url parameter.