CVE-2025-62940 identifies a stored Cross-site Scripting (XSS) vulnerability in the Nick Diego Blox Lite product, specifically affecting versions up to and including 1.2.8. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing attackers to inject malicious scripts that are stored on the server and subsequently executed in the browsers of users who access the affected pages. This type of vulnerability can be exploited to steal session cookies, perform actions on behalf of authenticated users, or deliver malicious payloads, thereby compromising confidentiality and integrity. The CVSS vector indicates that the attack can be performed remotely over the network (AV:N) with low attack complexity (AC:L), but requires privileges (PR:L) and user interaction (UI:R). The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. The CVSS score of 5.4 reflects a medium severity level. No patches or known exploits are currently documented, but the vulnerability is publicly disclosed and should be addressed promptly. The lack of patches increases the risk of exploitation once attackers develop proof-of-concept code. The vulnerability is relevant to organizations using Blox Lite for web content management or similar purposes, where user input is accepted and displayed dynamically.

For European organizations, this vulnerability poses a moderate risk primarily to confidentiality and integrity of user data. Attackers exploiting the stored XSS could hijack user sessions, steal sensitive information, or perform unauthorized actions within the context of the affected application. While availability is not impacted, the reputational damage and potential regulatory consequences under GDPR for data breaches involving personal data could be significant. Organizations relying on Blox Lite for customer-facing or internal web applications may face targeted attacks aiming to compromise user trust or gain footholds for further exploitation. The requirement for low privileges and user interaction means insider threats or social engineering could facilitate exploitation. The absence of known exploits currently limits immediate risk, but the public disclosure increases the likelihood of future attacks. European entities with high web application exposure or those in regulated sectors should consider this vulnerability a priority for remediation.

Organizations should immediately inventory their use of Nick Diego Blox Lite and identify affected versions (<=1.2.8). In the absence of an official patch, implement input validation and output encoding controls to neutralize potentially malicious input before rendering it on web pages. Employ Content Security Policy (CSP) headers to restrict script execution and reduce the impact of XSS attacks. Regularly audit and sanitize stored content that may contain malicious scripts. Limit user privileges to the minimum necessary to reduce the risk of exploitation. Educate users about the risks of interacting with untrusted content and implement multi-factor authentication to mitigate session hijacking risks. Monitor web application logs for unusual activity indicative of XSS exploitation attempts. Engage with the vendor for timely patch releases and apply updates as soon as they become available. Consider deploying Web Application Firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting Blox Lite.