CVE-2025-11872 is a stored Cross-Site Scripting (XSS) vulnerability identified in the Material Design Iconic Font Integration plugin for WordPress, maintained by mcostales84. This vulnerability arises from improper neutralization of input during web page generation (CWE-79), specifically within the plugin's 'mdiconic' shortcode. The root cause is insufficient sanitization and escaping of user-supplied attributes, allowing authenticated users with contributor-level permissions or higher to inject arbitrary JavaScript code into WordPress pages. When these pages are accessed by other users, the injected scripts execute in their browsers, potentially compromising session tokens, redirecting users, or performing unauthorized actions within the context of the affected site. The vulnerability affects all versions up to and including version 2 of the plugin. The CVSS v3.1 base score is 6.4, reflecting a medium severity level, with an attack vector of network (remote), low attack complexity, requiring privileges (contributor or above), no user interaction, and a scope change. No public exploits have been reported yet, but the vulnerability poses a significant risk in environments where multiple users have editing rights. The lack of available patches at the time of publication necessitates immediate mitigation steps to reduce exposure.

For European organizations, this vulnerability can lead to unauthorized script execution on corporate or public-facing WordPress sites, risking data confidentiality and integrity. Attackers could steal session cookies, perform actions on behalf of legitimate users, or inject malicious content that damages brand reputation. Given the widespread use of WordPress across Europe for business and governmental websites, exploitation could disrupt services and erode user trust. The requirement for contributor-level access limits the attack surface but does not eliminate risk, especially in organizations with large editorial teams or less stringent access controls. The vulnerability does not impact availability directly but can facilitate further attacks that might. The scope change in CVSS indicates that the vulnerability can affect components beyond the initially targeted plugin, potentially compromising the entire WordPress installation or user base. Countries with significant WordPress usage and active content management workflows are particularly vulnerable to exploitation.

European organizations should immediately audit user roles and permissions within WordPress, restricting contributor-level access to trusted personnel only. Implement strict input validation and output escaping on all user-generated content, especially shortcodes like 'mdiconic'. Monitor and log shortcode usage to detect anomalous or unauthorized script injections. Until an official patch is released, consider disabling or removing the Material Design Iconic Font Integration plugin if it is not critical. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious script injections related to this vulnerability. Educate content contributors about the risks of injecting untrusted content and enforce security best practices in content management. Regularly update WordPress core and plugins to incorporate security fixes promptly. Finally, conduct periodic security assessments and penetration tests focusing on XSS vulnerabilities in content management workflows.