CVE-2025-68854: ID Arrays DOM-Based XSS Vulnerability

CVE-2025-68854 Overview

CVE-2025-68854 is a DOM-Based Cross-Site Scripting (XSS) vulnerability affecting the WordPress ID Arrays plugin developed by harman79. The vulnerability stems from improper neutralization of user-controlled input during web page generation, allowing attackers to inject malicious scripts that execute within the context of a victim's browser session.

DOM-Based XSS vulnerabilities are particularly concerning because they occur entirely client-side, making them harder to detect through traditional server-side security measures. The malicious payload is processed by the browser's DOM, enabling attackers to steal session cookies, capture credentials, redirect users to malicious sites, or perform unauthorized actions on behalf of authenticated users.

Critical Impact

Attackers can exploit this DOM-Based XSS vulnerability to execute arbitrary JavaScript in victim browsers, potentially leading to session hijacking, credential theft, and website defacement through crafted malicious requests.

Affected Products

• WordPress ID Arrays plugin version 2.1.2 and earlier
• WordPress installations running vulnerable versions of the id-arrays plugin

Discovery Timeline

• 2026-02-20 - CVE-2025-68854 published to NVD
• 2026-02-23 - Last updated in NVD database

Technical Details for CVE-2025-68854

Vulnerability Analysis

This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation). The ID Arrays WordPress plugin fails to properly sanitize user-supplied input before rendering it in the DOM, creating a post-based reflected XSS attack surface.

The vulnerability requires user interaction, as the attack is network-accessible but needs a victim to interact with a crafted malicious URL or form submission. Once triggered, the exploit can affect resources beyond the vulnerable component's scope, potentially compromising the confidentiality, integrity, and availability of user data and browser session.

Root Cause

The root cause of this vulnerability lies in insufficient input validation and output encoding within the ID Arrays plugin. When processing POST-based requests, the plugin directly incorporates user-controlled data into the webpage DOM without proper sanitization or contextual encoding. This allows specially crafted input containing JavaScript code to be interpreted and executed by the victim's browser rather than being treated as harmless text data.

Attack Vector

The attack vector for CVE-2025-68854 is network-based and involves crafting malicious POST requests containing JavaScript payloads. An attacker would typically:

1. Identify input fields or parameters processed by the ID Arrays plugin
2. Craft a malicious payload containing JavaScript code designed to execute in the DOM context
3. Deliver the attack through social engineering, tricking users into submitting forms or clicking links that trigger the malicious POST request
4. Upon successful exploitation, the injected script executes with the same privileges as the victim user

The vulnerability manifests when user input is processed by client-side JavaScript and inserted into the DOM without proper encoding. For detailed technical information, refer to the Patchstack WordPress Vulnerability Advisory.

Detection Methods for CVE-2025-68854

Indicators of Compromise

• Unusual JavaScript execution patterns originating from POST request parameters
• Unexpected DOM modifications on pages utilizing the ID Arrays plugin functionality
• Browser console errors indicating script injection attempts
• Web application firewall logs showing XSS payload patterns in POST data

Detection Strategies

• Deploy Web Application Firewall (WAF) rules specifically targeting XSS patterns in POST request bodies
• Implement Content Security Policy (CSP) headers to restrict inline script execution and report violations
• Monitor server access logs for requests containing common XSS payload signatures such as <script>, javascript:, or event handlers
• Utilize browser-based XSS auditing tools and security extensions for detection during development and testing

Monitoring Recommendations

• Enable comprehensive logging for all POST requests to WordPress installations using the ID Arrays plugin
• Configure real-time alerting for CSP violation reports indicating potential XSS exploitation attempts
• Regularly audit WordPress plugin activity logs for suspicious input patterns
• Implement client-side integrity monitoring to detect unauthorized DOM modifications

How to Mitigate CVE-2025-68854

Immediate Actions Required

• Disable or deactivate the ID Arrays plugin (id-arrays) immediately if not critical to operations
• Review recent access logs for signs of exploitation attempts against vulnerable endpoints
• Implement WAF rules to block common XSS payload patterns targeting the plugin
• Notify website administrators and users about potential security risks until a patch is available

Patch Information

As of the last update on 2026-02-23, users should monitor the official WordPress plugin repository and the Patchstack advisory for patch availability. The vulnerability affects versions through 2.1.2, so any version released after this should be evaluated for security fixes.

Workarounds

• Implement strict Content Security Policy headers to prevent inline script execution: Content-Security-Policy: script-src 'self'; object-src 'none';
• Deploy server-side input validation to sanitize all POST parameters before processing
• Consider using WordPress security plugins that provide virtual patching capabilities
• Restrict access to plugin functionality to authenticated and trusted users only

# Add Content Security Policy header to Apache configuration
# Add to .htaccess or virtual host configuration
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; object-src 'none';"

# For Nginx, add to server block
# add_header Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; object-src 'none';";