CVE-2025-58676 is a high-severity vulnerability affecting the extendyourweb HORIZONTAL SLIDER product, specifically versions up to 2.4. The vulnerability is classified as CWE-352, indicating a Cross-Site Request Forgery (CSRF) weakness. CSRF vulnerabilities allow an attacker to trick authenticated users into submitting unwanted requests to a web application in which they are currently authenticated. In this case, the CSRF vulnerability enables Stored Cross-Site Scripting (Stored XSS) attacks. Stored XSS occurs when malicious scripts are permanently stored on the target server, such as in a database, and then executed in the browsers of users who access the affected content. The CVSS 3.1 base score of 7.1 reflects a high severity, with an attack vector of network (remote exploitation), low attack complexity, no privileges required, but user interaction needed. The scope is changed, meaning the vulnerability affects resources beyond the initially vulnerable component. The impact affects confidentiality, integrity, and availability at a low level each, indicating that the attacker could potentially steal sensitive information, manipulate data, or disrupt service to some extent. The vulnerability is exploitable remotely without authentication but requires user interaction, such as the victim clicking a crafted link or visiting a malicious website while authenticated to the vulnerable application. No patches or fixes are currently available, and no known exploits have been reported in the wild as of the publication date. The vulnerability affects the HORIZONTAL SLIDER product, a web component likely used to create interactive horizontal sliders on websites, which may be integrated into various web platforms or content management systems. The presence of stored XSS via CSRF increases the risk because it allows persistent malicious code injection that can affect multiple users over time once exploited.

For European organizations, this vulnerability poses a significant risk, especially for those using the HORIZONTAL SLIDER component in their web applications or websites. Exploitation could lead to unauthorized actions performed on behalf of legitimate users, data theft, session hijacking, or defacement of web content. This can damage the organization's reputation, lead to regulatory non-compliance (e.g., GDPR violations due to data leakage), and cause operational disruptions. Since stored XSS can be used to deliver further attacks such as malware distribution or phishing, the threat extends beyond immediate technical impacts to broader cybersecurity risks. Organizations in sectors with high web presence, such as e-commerce, media, and public services, are particularly vulnerable. The requirement for user interaction means that social engineering or phishing campaigns could be used to trigger exploitation, increasing the attack surface. The lack of available patches necessitates immediate risk management and mitigation to prevent exploitation.

1. Immediate mitigation should include disabling or removing the HORIZONTAL SLIDER component from critical web applications until a patch is available. 2. Implement strict Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of stored XSS. 3. Employ anti-CSRF tokens in all state-changing requests to prevent unauthorized requests from being accepted by the server. 4. Conduct thorough input validation and output encoding on all user-supplied data to prevent script injection. 5. Monitor web application logs for unusual activity or unexpected requests that may indicate exploitation attempts. 6. Educate users about the risks of clicking on suspicious links or visiting untrusted websites while authenticated to sensitive applications. 7. Stay updated with vendor advisories and apply patches promptly once they become available. 8. Consider deploying Web Application Firewalls (WAF) with rules designed to detect and block CSRF and XSS attack patterns targeting this component. 9. Review and limit the use of third-party plugins or components, ensuring they come from trusted sources and are regularly updated.