CVE-2023-4772

by Fred · 06/09/2023

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.

Date published : 2023-09-06

https://plugins.trac.wordpress.org/browser/newsletter/tags/7.8.9/subscription/subscription.php#L1653

https://plugins.trac.wordpress.org/changeset/2955097/newsletter#file21