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The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 's' Search Parameter in all versions up to, and including, 2.8.18 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Exploitation requires that a site administrator has configured at least one Ad Inserter block using the {title} or {short-title} placeholder with that block enabled for search pages, which is a standard, documented plugin feature.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ad Inserter Plugin | — | Update ad-inserter plugin to version 2.8.19, or a newer patched version | Oct 30, 2026 | Sep 30, 2026 |
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