CVE-2025-48316 is a security vulnerability classified as CWE-79, which pertains to Improper Neutralization of Input During Web Page Generation, commonly known as Cross-site Scripting (XSS). This vulnerability affects the ItayXD Responsive Mobile-Friendly Tooltip product, specifically versions up to 1.6.6. The flaw allows for Stored XSS attacks, meaning that malicious input submitted by an attacker is stored by the application and later rendered in the web page without proper sanitization or encoding. This can lead to execution of arbitrary JavaScript code in the context of users' browsers who view the affected pages. The CVSS v3.1 base score is 6.5, indicating a medium severity level. The vector string (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) shows that the attack can be performed remotely over the network with low attack complexity, requires low privileges, and user interaction is needed. The scope is changed, meaning the vulnerability affects components beyond the initially vulnerable component. The impact includes limited confidentiality, integrity, and availability losses. No known exploits are currently in the wild, and no patches have been linked yet. Stored XSS vulnerabilities are particularly dangerous because they can be used to steal session cookies, perform actions on behalf of users, or deliver malware, especially in environments where users have elevated privileges or sensitive data is handled. The vulnerability arises from improper input validation and output encoding in the tooltip component, which is designed to enhance user experience on mobile-friendly web pages by displaying contextual information.

For European organizations, this vulnerability poses a significant risk, especially for those relying on the ItayXD Responsive Mobile-Friendly Tooltip in their web applications. Stored XSS can lead to session hijacking, unauthorized actions, and data theft, potentially violating GDPR requirements related to data protection and user privacy. Organizations in sectors such as finance, healthcare, e-commerce, and government are particularly vulnerable due to the sensitive nature of their data and the high trust users place in their web services. Exploitation could lead to reputational damage, regulatory fines, and operational disruptions. Since the vulnerability requires low privileges but user interaction, phishing or social engineering could be used to increase the attack success rate. The changed scope indicates that the impact could extend beyond the tooltip component, affecting other parts of the web application. Given the widespread use of tooltips in user interfaces, the attack surface is broad, and the vulnerability could be leveraged as a stepping stone for more advanced attacks within European organizations' networks.

European organizations should immediately audit their web applications to identify the use of the ItayXD Responsive Mobile-Friendly Tooltip component, particularly versions up to 1.6.6. Until an official patch is released, organizations should implement strict input validation and output encoding on all user-supplied data rendered in tooltips. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks. Additionally, implement HTTP-only and Secure flags on cookies to mitigate session hijacking risks. Conduct thorough code reviews and penetration testing focusing on stored XSS vectors within tooltip implementations. Educate developers on secure coding practices related to input sanitization and output encoding. Monitor web application logs for suspicious activities indicative of XSS exploitation attempts. If feasible, temporarily disable or replace the vulnerable tooltip component with a secure alternative until a vendor patch is available. Finally, maintain an incident response plan tailored to web application attacks to quickly contain and remediate any exploitation.