CVE-2026-9066
Medium
Description
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.
SeverityMedium
CVSS6.1
Exploit probability—
ProductWP Compress
PublishedJul 23, 2026
First seenJul 23, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- WP Compress7.10.04 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| WP Compress | v < 7.10.04 | 7.10.04 |
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