CVE-2024-52470: Dynamic URL SEO Plugin XSS Vulnerability

CVE-2024-52470 Overview

CVE-2024-52470 is a reflected Cross-Site Scripting (XSS) vulnerability in the brainvireinfo Dynamic URL SEO WordPress plugin. The flaw affects all versions of dynamic-url-seo up to and including version 1.0. The vulnerability is categorized under [CWE-79] for improper neutralization of input during web page generation.

An attacker can craft a malicious URL that, when clicked by a victim, executes arbitrary JavaScript in the victim's browser session. Successful exploitation requires user interaction but no authentication, and the impact crosses the trust boundary (scope change) of the affected WordPress site.

Critical Impact

Attackers can hijack authenticated sessions, steal cookies, or perform actions on behalf of logged-in WordPress users including administrators.

Affected Products

• brainvireinfo Dynamic URL SEO WordPress plugin (dynamic-url-seo)
• All versions from initial release through version 1.0
• WordPress sites running the vulnerable plugin

Discovery Timeline

• 2024-11-20 - CVE-2024-52470 published to NVD
• 2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-52470

Vulnerability Analysis

The Dynamic URL SEO plugin fails to neutralize user-controlled input before reflecting it back in the generated HTML response. When a victim clicks a crafted link containing JavaScript payload in a vulnerable parameter, the plugin renders that input directly into the page output.

The browser then parses the injected script in the context of the WordPress site's origin. This grants the attacker access to session cookies, the Document Object Model (DOM), and any client-side state available to the victim. The CVSS vector indicates a scope change, meaning the impact extends beyond the vulnerable component to affect site users and administrators.

Root Cause

The root cause is missing or insufficient output encoding of user-supplied input in the plugin's request-handling code. Input from HTTP request parameters reaches HTML rendering functions without being passed through WordPress sanitization helpers such as esc_html(), esc_attr(), or wp_kses().

Attack Vector

Exploitation requires an attacker to deliver a malicious URL to a victim through phishing, social media, or a compromised referrer. When the victim loads the URL on a site running the vulnerable plugin, the injected payload executes in their browser. No prior authentication is needed by the attacker, and the payload runs with the victim's privileges on the target site.

For technical details on the affected parameter and payload structure, refer to the Patchstack WordPress Vulnerability advisory.

Detection Methods for CVE-2024-52470

Indicators of Compromise

• HTTP request logs containing <script>, javascript:, onerror=, or onload= in query parameters targeting Dynamic URL SEO endpoints
• URL-encoded payloads such as %3Cscript%3E or %3Cimg%20src%3D in referrer or request URI fields
• Unexpected outbound requests from user browsers to attacker-controlled domains shortly after visiting the WordPress site
• WordPress administrator accounts performing actions from unusual IP addresses following a click on an external link

Detection Strategies

• Inspect web server access logs for requests to dynamic-url-seo plugin paths containing HTML or JavaScript characters in parameters
• Deploy a Web Application Firewall (WAF) ruleset that flags reflected XSS patterns against WordPress plugin endpoints
• Use Content Security Policy (CSP) violation reports to surface inline script execution attempts

Monitoring Recommendations

• Enable verbose HTTP request logging on WordPress sites and forward logs to a centralized analytics platform
• Alert on administrator session activity originating from short-lived or anomalous user agents
• Track plugin version inventory across WordPress installations to identify unpatched instances of dynamic-url-seo

How to Mitigate CVE-2024-52470

Immediate Actions Required

• Deactivate and remove the Dynamic URL SEO plugin from all WordPress installations until a vendor patch is verified
• Audit WordPress administrator and editor accounts for unauthorized changes, new users, or modified plugins and themes
• Force a password reset and invalidate active sessions for all privileged WordPress users
• Apply WAF rules that block reflected XSS payloads targeting the dynamic-url-seo plugin paths

Patch Information

No vendor patch is referenced in the NVD entry for versions above 1.0. The Patchstack advisory lists all versions up to 1.0 as affected. Site operators should monitor the Patchstack advisory and the WordPress plugin repository for an updated release.

Workarounds

• Remove the plugin entirely if a fixed version is not available
• Restrict access to WordPress administrative areas using IP allowlisting at the web server or WAF layer
• Enforce a strict Content Security Policy that disallows inline scripts and limits script sources to trusted origins
• Require administrators to use isolated browser profiles when managing the WordPress site

# Example WAF rule (ModSecurity) to block reflected XSS patterns
SecRule REQUEST_URI "@contains dynamic-url-seo" \
  "chain,deny,status:403,id:1005201,msg:'Block XSS attempt on dynamic-url-seo plugin'"
SecRule ARGS|REQUEST_URI "@rx (?i)(<script|javascript:|onerror=|onload=)" \
  "t:none,t:urlDecodeUni"