CyberRota Analysis
AI-GeneratedThe Newsletters Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting due to inadequate input sanitization and output escaping in the handling of the 'link' attribute within post_thumbnail shortcodes. This vulnerability allows authenticated attackers with contributor-level access or higher to inject malicious scripts that execute when users visit affected pages. WordPress site administrators using this plugin should prioritize patching to mitigate potential exploitation risks.
Original NVD Description
The Newsletters Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'link' attribute of the post_thumbnail (and newsletters_post_thumbnail) shortcodes in versions up to and including 4.15. This is due to insufficient input sanitization and output escaping in the post_thumbnail() method in helpers/shortcode.php, which concatenates the user-controlled $link shortcode attribute directly into an href attribute without esc_url() or esc_attr(). This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.