AMP for WP – Accelerated Mobile Pages

The AMP for WP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG file uploads in all versions up to, and including, 1.1.10. This is due to insufficient sanitization of SVG file content that only removes `<script>` tags while allowing other XSS vectors such as event handlers (onload, onerror, onmouseover), foreignObject elements, and SVG animation attributes. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts via malicious SVG file uploads that will execute whenever a user views the uploaded file.

The AMP for WP – Accelerated Mobile Pages plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.1.9. This is due to inverted nonce verification logic in the amp_theme_ajaxcomments AJAX handler, which rejects requests with VALID nonces and accepts requests with MISSING or INVALID nonces. This makes it possible for unauthenticated attackers to submit comments on behalf of logged-in users via a forged request granted they can trick a user into performing an action such as clicking on a link, and the plugin's template mode is enabled.