CVE-2025-65592 identifies a stored Cross Site Scripting (XSS) vulnerability in nopCommerce version 4.90.0, an open-source e-commerce platform widely used for online retail operations. The vulnerability arises from insufficient sanitization of user input in the product management module, specifically within the "Product Name" and "Short Description" fields. Attackers can inject malicious JavaScript payloads into these fields, which are then stored persistently in the backend database. When any user accesses the affected product pages, the malicious scripts execute automatically in their browsers. This stored XSS can lead to a range of attacks including session hijacking, credential theft, unauthorized actions on behalf of users, defacement of web content, or delivery of malware. The lack of a CVSS score and absence of known exploits in the wild suggest this is a newly published vulnerability (December 2025). However, the nature of stored XSS makes it a critical concern for e-commerce platforms where user trust and data integrity are paramount. nopCommerce 4.90.0 users should be aware that this vulnerability affects core product management features, potentially exposing both administrators and customers to risk. The vulnerability likely stems from inadequate input validation and output encoding in the web application code. Without proper sanitization, malicious scripts embedded in product metadata become a vector for persistent attacks. The vulnerability's impact extends to confidentiality (via session hijacking), integrity (via unauthorized content manipulation), and availability (via potential denial-of-service through script execution).

For European organizations, this vulnerability poses significant risks, particularly for those operating online retail platforms using nopCommerce 4.90.0. Exploitation could lead to theft of user credentials, unauthorized transactions, and erosion of customer trust due to defacement or malware distribution. The stored nature of the XSS means that any user viewing the infected product pages could be affected, amplifying the scope of impact. This can result in regulatory compliance issues under GDPR, especially if personal data is compromised. Financial losses may arise from fraud or remediation costs, and reputational damage could affect long-term business viability. Additionally, attackers might leverage this vulnerability to pivot into internal networks if administrative users are compromised. Given the centrality of e-commerce in European economies, the threat could disrupt business continuity and customer engagement.

To mitigate CVE-2025-65592, organizations should implement strict input validation and output encoding on all user-supplied data fields, particularly the "Product Name" and "Short Description" in the product management interface. Employ context-aware encoding (e.g., HTML entity encoding) to neutralize scripts before rendering. Limit the privileges of users who can add or edit product information to reduce attack surface. Conduct regular code reviews and security testing focusing on injection flaws. Deploy Web Application Firewalls (WAFs) with rules to detect and block XSS payloads targeting nopCommerce endpoints. Monitor logs for unusual activity related to product updates or page views. If possible, upgrade to a patched version of nopCommerce once available. Educate administrators on recognizing suspicious product entries and encourage prompt reporting. Finally, implement Content Security Policy (CSP) headers to restrict script execution sources, mitigating impact if an XSS payload executes.