CVE-2025-58647 is a medium severity vulnerability classified as CWE-79, indicating an Improper Neutralization of Input During Web Page Generation, commonly known as Cross-site Scripting (XSS). This vulnerability affects the Will.I.am Simple Restaurant Menu product, specifically versions up to 1.2. The flaw allows an attacker to inject malicious scripts that are stored persistently within the application, leading to Stored XSS attacks. When a victim user accesses the affected web pages, the malicious script executes in their browser context. The CVSS 3.1 score of 5.9 reflects a network attack vector (AV:N), low attack complexity (AC:L), but requires high privileges (PR:H) and user interaction (UI:R). The scope is changed (S:C), indicating that the vulnerability affects resources beyond the initially vulnerable component. The impact includes low confidentiality, integrity, and availability impacts, meaning the attacker can potentially steal some data, modify some content, or disrupt some functionality, but not fully compromise the system. Stored XSS can be leveraged for session hijacking, defacement, or delivering further payloads such as malware. No known exploits are currently in the wild, and no patches have been linked yet, which suggests that organizations using this product should be vigilant and prepare to apply fixes once available. The vulnerability arises from insufficient input sanitization or output encoding during web page generation, allowing malicious input to be embedded and later executed in users' browsers.

For European organizations, the impact of this vulnerability depends on the deployment of the Will.I.am Simple Restaurant Menu product. If used by restaurants or hospitality businesses in Europe, attackers could exploit this vulnerability to execute malicious scripts in the browsers of customers or staff accessing the menu interface. This could lead to theft of session tokens, redirection to phishing sites, or unauthorized actions performed on behalf of users. Although the confidentiality and integrity impact is rated low, the potential for reputational damage and loss of customer trust is significant, especially in sectors handling personal or payment data. Additionally, the availability impact, while low, could disrupt service and cause operational inconvenience. The requirement for high privileges to exploit suggests that attackers would need some level of authenticated access, possibly limiting exploitation to insider threats or compromised accounts. However, the changed scope indicates that the vulnerability could affect other components or users beyond the initial context, increasing risk. European data protection regulations such as GDPR impose strict requirements on data security; exploitation of this vulnerability leading to data breaches could result in regulatory penalties and legal consequences.

To mitigate this vulnerability, European organizations should implement the following specific measures: 1) Immediately audit the usage of the Simple Restaurant Menu product to identify affected versions and isolate vulnerable instances. 2) Enforce strict input validation and output encoding on all user-supplied data fields within the application to prevent injection of malicious scripts. 3) Apply the principle of least privilege to user accounts, minimizing the number of users with high privileges required for exploitation. 4) Monitor application logs and user activity for unusual behavior indicative of attempted XSS exploitation. 5) Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing the menu. 6) Educate staff and users about the risks of clicking suspicious links or executing unexpected scripts. 7) Coordinate with the vendor (Will.I.am) to obtain patches or updates as soon as they are released and apply them promptly. 8) Consider deploying Web Application Firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting this product. 9) Regularly review and update security configurations and conduct penetration testing focused on XSS vulnerabilities in the affected application.