CVE-2025-49939 identifies a stored Cross-site Scripting (XSS) vulnerability in the JetElements plugin for Elementor, a widely used WordPress page builder add-on developed by CrocoBlock. The vulnerability is due to improper neutralization of user-supplied input during the generation of web pages, which allows attackers to inject malicious scripts that are stored and later executed in the context of users visiting the affected site. This flaw affects all versions of JetElements up to and including 2.7.8. The attack vector is remote (network), requiring low privileges (authenticated user) and user interaction, such as a victim visiting a maliciously crafted page or content. The vulnerability impacts confidentiality, integrity, and availability by enabling attackers to execute arbitrary JavaScript, potentially stealing session cookies, defacing content, or performing actions on behalf of users. The CVSS 3.1 base score is 6.5 (medium severity), reflecting the ease of exploitation with some user interaction and the potential for scope change, meaning the attack can affect components beyond the initially vulnerable plugin. No public exploits are known at this time, but the widespread use of Elementor and JetElements in WordPress sites makes this a significant concern. The vulnerability was reserved in June 2025 and published in October 2025, with no patches currently linked, indicating that users should monitor vendor updates closely.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on WordPress websites with JetElements for Elementor. Successful exploitation could lead to unauthorized access to user sessions, data theft, website defacement, or distribution of malware through compromised sites. This can damage organizational reputation, lead to regulatory non-compliance (e.g., GDPR violations due to data leakage), and disrupt business operations. Given the medium severity and the requirement for authenticated access and user interaction, the risk is moderate but non-negligible. Organizations in sectors with high web presence such as e-commerce, media, and public services are particularly at risk. The vulnerability’s ability to affect confidentiality, integrity, and availability means that both customer trust and operational continuity could be compromised if exploited.

European organizations should implement the following specific mitigations: 1) Immediately audit and inventory WordPress sites using JetElements for Elementor to identify affected versions. 2) Apply vendor patches or updates as soon as they become available; if no patch exists yet, consider temporarily disabling the vulnerable plugin or restricting access to authenticated users. 3) Implement strict input validation and output encoding on all user-generated content fields to prevent injection of malicious scripts. 4) Employ Web Application Firewalls (WAFs) with rules targeting stored XSS patterns specific to JetElements. 5) Monitor logs and user activity for unusual behavior indicative of XSS exploitation attempts. 6) Educate site administrators and users about the risks of clicking untrusted links or interacting with suspicious content. 7) Regularly back up website data to enable recovery in case of defacement or compromise. 8) Consider deploying Content Security Policy (CSP) headers to restrict execution of unauthorized scripts. These steps go beyond generic advice by focusing on plugin-specific controls and proactive monitoring tailored to the threat.