CVE-2025-62923 identifies a DOM-based Cross-site Scripting (XSS) vulnerability in the Marquee Addons for Elementor plugin developed by Debuggers Studio. This plugin extends the Elementor page builder for WordPress, widely used for creating dynamic web content. The vulnerability stems from improper neutralization of input during web page generation, specifically allowing malicious scripts to be injected into the Document Object Model (DOM) without adequate sanitization or encoding. This flaw affects all versions up to and including 3.7.12. The attack vector is remote over the network (AV:N), requires no privileges (PR:N), but does require user interaction (UI:R), such as clicking a crafted link or visiting a malicious page. The vulnerability has a scope change (S:C), meaning the impact crosses security boundaries, affecting the confidentiality and integrity of user data, but not availability. The CVSS v3.1 base score is 6.1, reflecting medium severity. Although no known exploits are currently reported in the wild, the nature of DOM-based XSS makes it a viable attack vector for stealing session tokens, defacing websites, or conducting phishing campaigns. The vulnerability is particularly concerning for websites that handle sensitive user information or perform critical business functions, as injected scripts can manipulate client-side behavior or exfiltrate data. The lack of an official patch link suggests that users should monitor vendor advisories closely for updates. The vulnerability highlights the importance of secure coding practices in WordPress plugins, especially those that dynamically generate web content based on user input.

For European organizations, this vulnerability poses a risk primarily to the confidentiality and integrity of user data accessed via affected WordPress sites. Attackers exploiting this DOM-based XSS could hijack user sessions, steal cookies, or perform unauthorized actions on behalf of users, potentially leading to data breaches or reputational damage. Organizations in sectors such as e-commerce, finance, healthcare, and government that rely on Elementor with the vulnerable addon are at higher risk due to the sensitivity of their data and regulatory requirements like GDPR. The medium severity score indicates that while the vulnerability is not critical, it can be leveraged in targeted attacks, especially when combined with social engineering. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, as attackers often develop exploits after public disclosure. Additionally, the vulnerability could be used as a foothold for more complex attacks, including lateral movement or persistent access. The impact is amplified in environments where multiple users have access to the affected web applications, increasing the attack surface. Given the widespread use of WordPress and Elementor in Europe, the potential scale of impact is significant.

European organizations should implement a multi-layered mitigation approach. First, they must monitor Debuggers Studio and Elementor plugin advisories for official patches and apply updates immediately once available. Until patches are released, organizations should consider disabling the Marquee Addons for Elementor plugin if feasible or restricting its usage to trusted users only. Implementing strict Content Security Policies (CSP) can help mitigate the impact of XSS by restricting the execution of unauthorized scripts. Web Application Firewalls (WAFs) with rules targeting XSS payloads should be deployed to detect and block malicious requests. Developers and administrators should audit and sanitize all user inputs rigorously, especially those that influence DOM manipulation. Regular security testing, including automated scanning and manual penetration testing focused on client-side vulnerabilities, is recommended. User education to recognize phishing attempts that exploit XSS vectors can reduce successful exploitation. Finally, logging and monitoring web application activity for unusual behavior can facilitate early detection of exploitation attempts.