Vulnerability in AMP for WP – Accelerated Mobile Pages — CVE-2026-83591

What to do now

Update AMP for WP – Accelerated Mobile Pages to 1.1.17 or later.

Affected versions

• Everything up to and including 1.1.16

The AMP for WP – Accelerated Mobile Pages plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content via Regex Transformation in all versions up to, and including, 1.1.16 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The crafted payload uses only WordPress-permitted comment tags and attributes (an anchor with href and title), and the AMP sanitizer pipeline omits javascript: protocol blocking, meaning neither the comment save filter nor the AMP output stage removes the malicious URI introduced by the transformation.

This description is reproduced verbatim from the public vulnerability record.

• https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.14/components/comments/comments.php#L89
• https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.14/includes/features/functions.php#L314
• https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.14/templates/features.php#L8823
• https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.15/components/comments/comments.php#L89
• https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.15/includes/features/functions.php#L314
• https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.15/templates/features.php#L8823

This page is compiled automatically from public databases. Accuracy is not guaranteed; confirm against the vendor advisory before acting.