CVE-2025-8062 is a stored Cross-Site Scripting (XSS) vulnerability identified in the WS Theme Addons plugin for WordPress, specifically affecting the ws_weather shortcode functionality. This vulnerability arises from improper input sanitization and insufficient output escaping of user-supplied attributes within the plugin, allowing authenticated users with contributor-level privileges or higher to inject arbitrary malicious scripts into WordPress pages. These scripts are persistently stored and executed whenever any user accesses the compromised page, potentially leading to session hijacking, defacement, or redirection to malicious sites. The vulnerability affects all versions of the WS Theme Addons plugin up to and including version 2.0.0. The CVSS v3.1 base score is 6.4, indicating a medium severity level. The attack vector is network-based, requiring low attack complexity and privileges at the contributor level, but no user interaction is needed for exploitation. The scope is changed, meaning the vulnerability can affect resources beyond the initially vulnerable component. Although no known exploits have been reported in the wild, the vulnerability's nature and the widespread use of WordPress make it a significant concern. The lack of patch links suggests that a fix may not yet be publicly available, increasing the urgency for mitigation.

For European organizations, this vulnerability poses a moderate risk, especially for those relying on WordPress websites with the WS Theme Addons plugin installed. Exploitation could lead to unauthorized script execution, enabling attackers to steal sensitive user data, including authentication cookies, or perform actions on behalf of legitimate users. This can result in reputational damage, data breaches, and potential regulatory non-compliance under GDPR due to compromised personal data. The requirement for contributor-level access means insider threats or compromised accounts could be leveraged to exploit this vulnerability. Additionally, since WordPress powers a significant portion of European websites, including small and medium enterprises, educational institutions, and public sector entities, the attack surface is considerable. The persistent nature of stored XSS increases the risk of widespread impact across multiple users and sessions. Furthermore, the scope change indicates that the vulnerability could affect other components or users beyond the initially targeted plugin, amplifying potential damage.

European organizations should immediately audit their WordPress installations to identify the presence of the WS Theme Addons plugin, particularly versions up to 2.0.0. Until an official patch is released, organizations should consider disabling or removing the plugin to eliminate the attack vector. Implement strict role-based access controls to limit contributor-level privileges only to trusted users, reducing the risk of malicious script injection. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious payloads targeting the ws_weather shortcode parameters. Additionally, enable Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts on affected websites. Regularly monitor website content for unauthorized changes or injected scripts. Educate content contributors about secure input practices and the risks of XSS. Once a patch becomes available, prioritize timely updates. Finally, conduct thorough security testing and code reviews for custom shortcodes or plugins to prevent similar vulnerabilities.