CVE-2025-11745

13th percentile - higher than 13% of all known CVEs

The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom field through the plugin's 'adinserter' shortcode in all versions up to, and including, 2.8.7 due to insufficient input sanitization and output escaping on user supplied attributes. 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.

An authenticated attacker with contributor-level access can inject malicious JavaScript that executes in visitors' browsers, potentially leading to session theft, account takeover, or content modification. The risk affects organizations using this plugin on WordPress sites with multiple authors.

Update the Ad Inserter plugin to a version newer than 2.8.7 if available, or consider removing it and replacing it with an alternative solution. Additionally, restrict contributor privileges and regularly review user-published content.