The Newsletter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'newsletter_form' shortcode in versions up to, and including, 7.8.9 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.

A vulnerability, which was classified as problematic, was found in SimplePHPscripts NewsLetter Script PHP 2.4. Affected is an unknown function of the file /preview.php of the component URL Parameter Handler. The manipulation leads to cross site scripting. It is possible to launch the attack remotely. The identifier of this vulnerability is VDB-233292.

The Newsletter Manager plugin for WordPress is vulnerable to insecure deserialization in versions up to, and including, 1.5.1. This is due to unsanitized input from the 'customFieldsDetails' parameter being passed through a deserialization function. This potentially makes it possible for unauthenticated attackers to inject a serialized PHP object.

The Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue WordPress plugin before 3.1.61 does not sanitise and escape a parameter before outputting it back in the admin dashboard when the WPML plugin is also active and configured, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

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 was found in EELV Newsletter Plugin 2.x on WordPress. It has been rated as problematic. Affected by this issue is the function style_newsletter of the file lettreinfo.php. The manipulation of the argument email leads to cross site scripting. The attack may be launched remotely. The name of the patch is 3339b42316c5edf73e56eb209b6a3bb3e868d6ed. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-230660.

The Newsletter Popup WordPress plugin through 1.2 does not have CSRF checks in some places, which could allow attackers to make logged in users perform unwanted actions via CSRF attacks as the wp_newsletter_show_localrecord page is not protected with a nonce.

The Newsletter Popup WordPress plugin through 1.2 does not sanitise and escape some of its settings, which could allow unauthenticated users to perform Stored Cross-Site Scripting attacks

Cross-site scripting vulnerability in Newsletter versions prior to 7.6.9 allows a remote unauthenticated attacker to inject an arbitrary script.

Prestashop advancedpopupcreator v1.1.21 to v1.1.24 was discovered to contain a SQL injection vulnerability via the component AdvancedPopup::getPopups().