CVE-2026-1399

The WP Google Ad Manager Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 1.1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

More information : https://plugins.trac.wordpress.org/browser/wp-google-ad-manager-plugin/tags/1.1.0/WP-Google-Ad-Manager.php#L194