CVE-2025-62111 is a stored Cross-site Scripting (XSS) vulnerability classified under CWE-79, found in the Webvitaly Extra Shortcodes plugin for WordPress, affecting versions up to 2.2. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing malicious scripts to be stored and later executed in the context of users viewing the affected pages. The CVSS 3.1 base score is 6.5, indicating a medium severity level, with an attack vector of network (remote exploitation), low attack complexity, requiring low privileges, and user interaction. The vulnerability impacts confidentiality, integrity, and availability to a limited extent, as attackers can execute arbitrary scripts that may steal session tokens, manipulate page content, or perform actions on behalf of users. Exploitation requires an attacker to have at least low-level privileges on the site (e.g., contributor or author) and to trick a user into interacting with the malicious content. No patches or known exploits are currently available, but the vulnerability is publicly disclosed and should be addressed promptly. The plugin is commonly used in WordPress environments to add shortcode functionalities, making it a relevant target for attackers aiming to compromise websites that rely on these features.

For European organizations, the impact of this vulnerability can be significant, particularly for those operating WordPress-based websites that utilize the Extra Shortcodes plugin. Exploitation could lead to unauthorized disclosure of sensitive information such as session cookies or personal data, manipulation of website content, and potential defacement or redirection to malicious sites. This can damage organizational reputation, lead to regulatory non-compliance under GDPR due to data leakage, and disrupt business operations. Public sector websites, e-commerce platforms, and service providers are especially at risk due to their high visibility and user interaction levels. The requirement for low privileges and user interaction lowers the barrier for exploitation, increasing the likelihood of successful attacks if mitigations are not applied. Although no known exploits are currently in the wild, the public disclosure increases the risk of future exploitation attempts.

Organizations should immediately inventory their WordPress installations to identify the presence of the Webvitaly Extra Shortcodes plugin and its version. Until an official patch is released, administrators should consider disabling or removing the plugin if it is not critical. Implement strict input validation and output encoding on all user-supplied data processed by the plugin to prevent script injection. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts. Monitor web server and application logs for unusual shortcode usage or unexpected user input patterns. Limit user privileges to the minimum necessary, especially restricting who can add or edit shortcodes. Educate users about the risks of interacting with suspicious content and ensure that multi-factor authentication is enabled to reduce the risk of compromised accounts. Once a patch is available, apply it promptly and verify the effectiveness of the fix through security testing.