The WP Compress WordPress plugin before 7.10.04 does not validate the value of a query parameter that controls the asset CDN host before using it to build the URLs of JavaScript files emitted on the page, leading to Reflected XSS. When a visitor follows a crafted link, the WP Compress WordPress plugin before 7.10.04's loader injects script elements pointing to an attacker-controlled origin, which lets the attacker execute arbitrary JavaScript in the visitor's session on the target site.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Wp Compress Image Optimizer Plugin | — | Update wp-compress-image-optimizer plugin to version 7.10.04, or a newer patched version | Jul 30, 2026 | Jul 2, 2026 |
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