CVE-2025-46501

The Mixcloud Embed plugin for WordPress fails to properly neutralize user input before outputting it in web pages, resulting in a stored cross-site scripting (XSS) vulnerability. This affects all versions up to and including 2.2.0 [1].

An attacker with low privileges (e.g., subscriber or contributor) can inject malicious JavaScript into the plugin's input fields. When a privileged user, such as an administrator, views the injected content, the script executes. Successful exploitation requires user interaction, such as clicking a malicious link or visiting a crafted page [1].

If exploited, the attacker can execute arbitrary JavaScript in the victim's browser, leading to session hijacking, website defacement, redirection to malicious sites, or theft of sensitive information. This vulnerability is known to be used in mass-exploit campaigns targeting thousands of websites regardless of traffic size [1].

As of the publication date, no official patch has been released. Users should update the plugin immediately if a fix becomes available. If updating is not possible, consider disabling the plugin or implementing a web application firewall rule to block XSS attempts. The CVSS score is 6.5 (Medium) [1].