CVE-2025-68854 identifies a DOM-based Cross-site Scripting (XSS) vulnerability in the harman79 ID Arrays product, specifically affecting versions up to 2.1.2. The root cause is improper neutralization of input during web page generation, which allows malicious input to be interpreted as executable code within the Document Object Model (DOM) of a web page. Unlike traditional reflected or stored XSS, DOM-based XSS occurs entirely on the client side, where the vulnerability arises from unsafe handling of user-controllable data in JavaScript that modifies the DOM. This can lead to execution of arbitrary scripts in the victim's browser, enabling attackers to steal cookies, session tokens, or perform actions on behalf of the user without their consent. The vulnerability affects web applications that incorporate the ID Arrays component, which is used for managing or manipulating arrays of IDs in client-side scripts. No patches or fixes are currently linked, and no known exploits have been reported in the wild, but the vulnerability has been publicly disclosed and assigned a CVE identifier. The absence of a CVSS score necessitates an assessment based on the nature of the vulnerability: DOM-based XSS is generally easy to exploit if input is not sanitized, and it can have severe consequences for confidentiality and integrity. The vulnerability does not require server-side authentication or user interaction beyond visiting a maliciously crafted page or link. This makes it a significant risk for web applications using the affected versions of harman79 ID Arrays. Organizations should prepare to apply patches when available and implement mitigations to reduce risk in the interim.

The impact of CVE-2025-68854 is primarily on the confidentiality and integrity of user data within affected web applications. Successful exploitation allows attackers to execute arbitrary JavaScript in the context of a victim's browser, potentially leading to session hijacking, theft of sensitive information such as cookies or credentials, unauthorized actions performed on behalf of the user, and defacement or manipulation of web content. This can undermine user trust and lead to broader security breaches if attackers pivot from compromised user sessions to internal systems. The vulnerability affects client-side code, which complicates detection and mitigation since traditional server-side protections may not suffice. Organizations worldwide that rely on harman79 ID Arrays in their web applications, especially those handling sensitive user data or critical business functions, face increased risk of data breaches and reputational damage. The lack of known exploits in the wild currently limits immediate impact, but the public disclosure increases the likelihood of future exploitation attempts. Additionally, the vulnerability could be leveraged in targeted attacks against high-value individuals or organizations, amplifying its potential impact.

1. Apply patches or updates from harman79 as soon as they become available to address the vulnerability directly. 2. Implement strict input validation and sanitization on all user-controllable data before it is processed or inserted into the DOM, using secure coding practices and libraries designed to prevent XSS. 3. Deploy Content Security Policy (CSP) headers that restrict the execution of inline scripts and limit sources of executable code to trusted domains, reducing the risk of script injection. 4. Use web application firewalls (WAFs) with capabilities to detect and block DOM-based XSS attacks, including monitoring for suspicious client-side script behavior. 5. Conduct thorough code reviews and security testing focused on client-side JavaScript to identify unsafe DOM manipulations and remediate them. 6. Educate developers on the risks of DOM-based XSS and best practices for secure JavaScript coding, including avoiding direct insertion of untrusted data into the DOM. 7. Monitor application logs and user reports for signs of suspicious activity that may indicate exploitation attempts. 8. Consider implementing browser security features such as HTTPOnly and Secure flags on cookies to limit exposure if session tokens are stolen.