WP Compress vulnerabilities

An unauthenticated attacker can remotely execute arbitrary code (RCE) in WP Compress versions prior to 7.20.01.

The WP Compress – Instant Performance & Speed Optimization plugin for WordPress up to version 7.10.09 is vulnerable to Cross-Site Request Forgery due to missing or incorrect nonce validation. Unauthenticated attackers can trick an administrator into performing an action that deletes arbitrary WordPress options, including critical ones such as siteurl, home, active_plugins, template, and stylesheet, causing site outage or a full plugin and theme reset.

The WP Compress WordPress plugin before version 7.10.04 does not validate the value of a query parameter that controls the asset CDN host before using it to build URLs of JavaScript files, leading to Reflected XSS. When a visitor follows a crafted link, the plugin's loader injects script elements pointing to an attacker-controlled origin, allowing arbitrary JavaScript execution in the visitor's session on the target site.