CVE-2025-62990 identifies a stored Cross-site Scripting (XSS) vulnerability in the Livemesh Addons for Beaver Builder WordPress plugin, affecting all versions up to 3.9.2. This vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, categorized under CWE-79. Stored XSS means that malicious scripts injected by an attacker are permanently stored on the target server (e.g., in a database or content fields) and executed in the browsers of users who visit the affected pages. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) indicates that the attack can be launched remotely over the network with low attack complexity, requires low privileges (such as a contributor or editor role), and user interaction (such as a victim clicking a crafted link) is necessary. The scope is changed (S:C), meaning the vulnerability can affect resources beyond the initially vulnerable component. The impact affects confidentiality, integrity, and availability to a limited extent, as attackers can execute arbitrary JavaScript in the context of the victim's browser, potentially stealing session tokens, defacing content, or performing actions on behalf of the user. No public exploits or patches are currently available, but the vulnerability is published and should be addressed promptly. The plugin is widely used in WordPress sites for enhanced page building, making the attack surface significant, especially for organizations relying on this plugin for their web presence.

For European organizations, this vulnerability poses a risk primarily to websites using the Livemesh Addons for Beaver Builder plugin. Successful exploitation can lead to session hijacking, unauthorized actions performed by users with elevated privileges, data leakage, and defacement of web content. This can damage organizational reputation, lead to regulatory non-compliance (e.g., GDPR breaches if personal data is exposed), and disrupt business operations. Since the vulnerability requires low privileges but user interaction, insider threats or compromised accounts could be leveraged to exploit it. Organizations in sectors with high web presence such as e-commerce, media, and public services are particularly vulnerable. The cross-site scripting flaw could also be used as a pivot point for more advanced attacks, including delivering malware or phishing campaigns targeting European users.

1. Monitor Livemesh and Beaver Builder official channels for security patches and apply updates immediately once available. 2. Restrict user roles and permissions to the minimum necessary, limiting who can input content that is rendered on public pages. 3. Implement strong Content Security Policies (CSP) to restrict the execution of unauthorized scripts and reduce the impact of XSS. 4. Sanitize and validate all user inputs rigorously, especially those that are stored and rendered on web pages. 5. Conduct regular security audits and penetration testing focusing on web application vulnerabilities. 6. Educate users and administrators about the risks of clicking untrusted links and the importance of secure content management practices. 7. Consider deploying Web Application Firewalls (WAF) with rules designed to detect and block XSS payloads targeting this plugin. 8. Monitor logs for unusual activities that may indicate exploitation attempts.