CVE-2026-24632: Delay Redirects DOM-Based XSS Vulnerability

CVE-2026-24632 Overview

CVE-2026-24632 is a DOM-Based Cross-Site Scripting (XSS) vulnerability affecting the Delay Redirects WordPress plugin developed by jagdish1o1. The vulnerability stems from improper neutralization of input during web page generation, allowing attackers to inject malicious scripts that execute within the victim's browser context.

DOM-Based XSS vulnerabilities are particularly dangerous as the attack payload is processed entirely on the client-side, making them harder to detect through traditional server-side security controls. In this case, the Delay Redirects plugin fails to properly sanitize user-supplied input before it is processed by client-side JavaScript code.

Critical Impact

Attackers with high privileges can exploit this vulnerability to execute arbitrary JavaScript in the context of other users' browser sessions, potentially leading to session hijacking, defacement, or malware distribution.

Affected Products

• Delay Redirects WordPress Plugin version 1.0.0 and earlier
• WordPress installations with Delay Redirects plugin enabled

Discovery Timeline

• 2026-01-23 - CVE-2026-24632 published to NVD
• 2026-01-26 - Last updated in NVD database

Technical Details for CVE-2026-24632

Vulnerability Analysis

This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation). The DOM-Based XSS attack occurs when the Delay Redirects plugin processes redirect parameters without adequate input validation or output encoding.

Unlike reflected or stored XSS, DOM-Based XSS executes entirely within the browser. The malicious payload modifies the Document Object Model (DOM) environment, causing the client-side code to execute in an unexpected manner. The vulnerability requires user interaction and high privileges to exploit, as indicated by the attack complexity parameters.

The attack is network-accessible and can affect the confidentiality, integrity, and availability of data within the browser session. While the exploitation requires administrative privileges (PR:H) and user interaction (UI:R), the changed scope (S:C) means the vulnerable component can impact resources beyond its security scope.

Root Cause

The root cause of this vulnerability lies in insufficient input sanitization within the Delay Redirects plugin's JavaScript code. When processing redirect URLs or delay parameters, the plugin directly incorporates user-controlled data into DOM operations without proper encoding or validation.

This implementation flaw allows attackers to craft malicious input that, when processed by the browser's JavaScript engine, results in the execution of arbitrary script code. The lack of Content Security Policy (CSP) headers or other client-side protections exacerbates the issue.

Attack Vector

The attack vector is network-based, requiring an authenticated administrator to interact with a crafted malicious link or page. An attacker could leverage social engineering techniques to convince an administrator to click a specially crafted URL containing the XSS payload.

Once the victim interacts with the malicious content, the injected JavaScript executes within their browser session with the same privileges as the legitimate application code. This can lead to cookie theft, session hijacking, keylogging, or further attacks against the WordPress installation.

The vulnerability mechanism involves unsanitized input being processed by the plugin's redirect handling logic. When malicious script content is included in redirect parameters, it gets written directly to the DOM without proper escaping, triggering script execution. For detailed technical information, refer to the Patchstack security advisory.

Detection Methods for CVE-2026-24632

Indicators of Compromise

• Unexpected JavaScript execution in browser developer console logs when using the Delay Redirects plugin
• Suspicious redirect URL parameters containing encoded script tags or JavaScript event handlers
• Unusual network requests originating from the browser to untrusted external domains
• Modified DOM elements or injected script nodes within pages utilizing the redirect functionality

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect XSS payloads in URL parameters and request bodies
• Monitor browser console logs for JavaScript errors or unexpected script execution patterns
• Review server access logs for URL patterns containing common XSS payload signatures such as <script>, javascript:, or event handlers
• Deploy Content Security Policy (CSP) headers to detect and report inline script execution attempts

Monitoring Recommendations

• Enable verbose logging for the Delay Redirects plugin and monitor for anomalous redirect patterns
• Implement client-side error tracking solutions to capture unexpected JavaScript exceptions
• Configure SentinelOne agents to monitor for suspicious browser behavior and script injection attempts
• Regularly audit WordPress plugin activity logs for unauthorized configuration changes

How to Mitigate CVE-2026-24632

Immediate Actions Required

• Deactivate and remove the Delay Redirects plugin version 1.0.0 or earlier until a patched version is available
• Implement Content Security Policy (CSP) headers to restrict inline script execution
• Review and restrict administrative access to reduce the attack surface
• Educate administrators about phishing and social engineering risks associated with clicking untrusted links

Patch Information

As of the last NVD update on 2026-01-26, no official patch has been released by the plugin author. Organizations should monitor the Patchstack advisory for updates regarding a security fix.

In the absence of an official patch, consider migrating to an alternative redirect plugin that has undergone security review and receives regular maintenance updates.

Workarounds

• Disable the Delay Redirects plugin entirely until a security patch is available
• Implement strict Content Security Policy headers to prevent inline script execution: script-src 'self'
• Use a Web Application Firewall with XSS protection rules to filter malicious payloads
• Restrict administrative access to trusted IP addresses only

# WordPress .htaccess CSP configuration example
<IfModule mod_headers.c>
    Header set Content-Security-Policy "script-src 'self'; object-src 'none'; base-uri 'self';"
    Header set X-XSS-Protection "1; mode=block"
    Header set X-Content-Type-Options "nosniff"
</IfModule>