CVE-2025-7058 identifies a stored Cross-Site Scripting (XSS) vulnerability in the Kingcabs WordPress theme developed by sparklewpthemes. The flaw exists in the handling of the 'progressbarLayout' parameter, which is insufficiently sanitized and escaped before being stored and rendered in web pages. This allows an authenticated attacker with Contributor-level privileges or higher to inject arbitrary JavaScript code into pages generated by the theme. Because the malicious script is stored persistently, it executes in the context of any user who visits the affected page, potentially compromising user sessions, stealing cookies, or performing actions on behalf of the victim. The vulnerability affects all versions up to and including 1.1.9. The CVSS 3.1 base score is 6.4, reflecting a medium severity with network attack vector, low attack complexity, privileges required at the Contributor level, no user interaction needed, and a scope change as the vulnerability can impact other users beyond the attacker. No public exploits or patches are currently available, increasing the risk window. The vulnerability falls under CWE-79, which is a common and well-understood web application security issue. Given the widespread use of WordPress and the popularity of themes like Kingcabs, this vulnerability could be leveraged to compromise websites, especially those with multiple contributors or editors. The lack of output escaping and input validation in the theme's code is the root cause, emphasizing the need for secure coding practices in theme development.

For European organizations, this vulnerability poses a risk primarily to websites using the Kingcabs WordPress theme, especially those that allow multiple users to contribute content. Exploitation can lead to session hijacking, unauthorized actions performed on behalf of users, defacement, or distribution of malware via injected scripts. This can damage organizational reputation, lead to data breaches involving user credentials or personal data, and potentially violate GDPR requirements regarding data protection and breach notification. The medium severity score indicates a moderate risk, but the scope change means that the impact can extend beyond the initial attacker to all users visiting the compromised pages. Organizations relying on WordPress for public-facing or internal sites with Contributor-level user roles are particularly vulnerable. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate it, as attackers could develop exploits rapidly once details are public. The lack of a patch means organizations must rely on interim controls to mitigate risk. Given the importance of web presence and e-commerce in Europe, successful exploitation could disrupt business operations and erode customer trust.

European organizations should implement several specific measures to mitigate this vulnerability: 1) Immediately audit and restrict Contributor-level and higher user permissions to trusted personnel only, minimizing the risk of malicious script injection. 2) Implement Web Application Firewall (WAF) rules that detect and block suspicious payloads targeting the 'progressbarLayout' parameter or similar inputs in the Kingcabs theme. 3) Conduct manual or automated scans of existing content for injected scripts or anomalies in pages generated by the theme. 4) Apply custom input validation and output escaping at the application or server level if possible, to sanitize inputs before storage and rendering. 5) Monitor logs and user activity for unusual behavior indicative of exploitation attempts. 6) Prepare for rapid deployment of official patches or updates from sparklewpthemes once released. 7) Consider temporarily disabling or replacing the Kingcabs theme if the risk is unacceptable and no immediate patch is available. 8) Educate content contributors about the risks of injecting untrusted content and enforce strict content submission policies. These steps go beyond generic advice by focusing on access control, proactive detection, and compensating controls specific to the vulnerability's nature and exploitation vector.