CVE-2025-64202 is a DOM-based Cross-site Scripting (XSS) vulnerability identified in the TieLabs Sahifa WordPress theme, affecting all versions prior to 5.8.6. The vulnerability stems from improper neutralization of user-supplied input during web page generation, which allows malicious actors to inject and execute arbitrary JavaScript code within the victim's browser context. Unlike traditional reflected or stored XSS, DOM-based XSS occurs entirely on the client side, manipulating the Document Object Model without new pages being loaded from the server. This can be exploited by crafting malicious URLs or payloads that, when visited by users, execute scripts that can steal cookies, session tokens, or perform actions on behalf of the user. The vulnerability does not require user authentication, increasing its risk profile, and can be exploited remotely. Although no public exploits have been reported yet, the widespread use of Sahifa in WordPress sites, particularly in blogs, news portals, and small business websites, increases the attack surface. The lack of a CVSS score suggests this is a newly published vulnerability, and the absence of patches at the time of reporting highlights the urgency for users to upgrade to version 5.8.6 or later once available. The vulnerability's impact primarily affects confidentiality and integrity, with potential availability impacts if attackers leverage the XSS for further attacks such as phishing or malware delivery.

For European organizations, the impact of CVE-2025-64202 can be significant, especially for those relying on WordPress sites using the Sahifa theme for customer engagement, e-commerce, or content delivery. Successful exploitation can lead to session hijacking, unauthorized access to user accounts, data leakage, and reputational damage. In sectors such as finance, healthcare, and government, where sensitive data is handled, the consequences could be severe, including regulatory penalties under GDPR for data breaches. Additionally, attackers could use the vulnerability to distribute malware or conduct phishing campaigns targeting European users, amplifying the threat. The ease of exploitation without authentication and the potential for widespread exposure on public-facing websites make this a critical concern. Organizations with high web traffic or those serving vulnerable user groups are at increased risk. The vulnerability also poses risks to supply chains if third-party vendors or partners use the affected theme.

Immediate mitigation involves upgrading the Sahifa theme to version 5.8.6 or later, where the vulnerability has been addressed. If an immediate upgrade is not feasible, organizations should implement strict Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of injected code. Web Application Firewalls (WAFs) should be configured to detect and block suspicious input patterns associated with DOM-based XSS. Regular security audits and penetration testing focusing on client-side vulnerabilities can help identify residual risks. Educating users about phishing risks and monitoring web traffic for unusual activity can further reduce exploitation chances. Developers should review and sanitize all user inputs, especially those reflected in the DOM, and avoid using unsafe JavaScript functions like eval() or innerHTML assignments without proper encoding. Finally, organizations should subscribe to vulnerability advisories from TieLabs and WordPress security communities to stay informed about patches and exploit developments.