CVE-2025-13846 identifies a stored Cross-Site Scripting (XSS) vulnerability in the Easy Map Creator plugin for WordPress, versions up to and including 3.0.2. The vulnerability is due to improper neutralization of input during web page generation, specifically through the 'width' parameter. Authenticated attackers with Contributor-level privileges or higher can inject arbitrary JavaScript code that is stored persistently in the plugin's data. When any user accesses a page containing the injected script, the malicious code executes in their browser context. This can lead to session hijacking, privilege escalation, or unauthorized actions performed on behalf of the victim. The vulnerability does not require user interaction beyond page access and has a CVSS 3.1 base score of 6.4, indicating a medium severity level. The attack vector is network-based, with low attack complexity, requiring only authenticated access but no additional user interaction. The scope is changed as the vulnerability affects multiple users viewing the infected content. No patches or official fixes are currently linked, and no known exploits have been reported in the wild. The root cause is insufficient input sanitization and output escaping in the plugin's handling of the 'width' parameter, a common vector for stored XSS in web applications. This vulnerability highlights the risks of inadequate input validation in WordPress plugins, especially those allowing user-generated content or parameters that are rendered on pages.

For European organizations, this vulnerability can compromise the confidentiality and integrity of user sessions on WordPress sites using the Easy Map Creator plugin. Attackers with Contributor-level access can inject scripts that execute in the browsers of other users, potentially leading to session hijacking, theft of sensitive information, or unauthorized actions such as content modification or privilege escalation. This can damage organizational reputation, lead to data breaches, and disrupt business operations. Since WordPress is widely used across Europe for corporate websites, e-commerce, and intranets, the impact can be significant, especially for organizations relying on this plugin for map-related functionalities. The vulnerability does not directly affect availability but can indirectly cause service disruptions if exploited to deface or manipulate site content. The requirement for authenticated access limits the attack surface but does not eliminate risk, as Contributor-level accounts are common in collaborative environments. The stored nature of the XSS means that once injected, the malicious payload persists and can affect multiple users over time, increasing the potential damage.

European organizations should immediately audit their WordPress installations to identify the presence of the Easy Map Creator plugin and verify the version in use. Until an official patch is released, mitigation should focus on minimizing Contributor-level access by reviewing and restricting user roles and permissions to the minimum necessary. Implement Web Application Firewall (WAF) rules to detect and block suspicious payloads targeting the 'width' parameter. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts. Regularly monitor logs and user activity for signs of exploitation or unusual behavior. Consider disabling or removing the plugin if it is not essential. Additionally, developers and site administrators should apply strict input validation and output encoding on all user-supplied data, especially parameters rendered in HTML contexts. Once a patch becomes available, prioritize timely updates. Conduct security awareness training for administrators and contributors about the risks of XSS and safe content management practices.