CVE-2024-13422: SEO Blogger to WordPress 301 Redirector XSS

CVE-2024-13422 Overview

CVE-2024-13422 is a Reflected Cross-Site Scripting (XSS) vulnerability in the SEO Blogger to WordPress Migration using 301 Redirection plugin for WordPress. The flaw affects all versions up to and including 0.4.8 and stems from insufficient input sanitization and output escaping on the url parameter. Unauthenticated attackers can inject arbitrary web scripts that execute when a user clicks a crafted link. The vulnerability is categorized under [CWE-79] (Improper Neutralization of Input During Web Page Generation).

Critical Impact

An unauthenticated attacker can execute arbitrary JavaScript in a victim's browser session, enabling session hijacking, credential theft, or forced administrative actions if the victim is a WordPress administrator.

Affected Products

• Suhas93 SEO Blogger to WordPress 301 Redirector plugin — all versions
• Versions 0.4.8 and prior
• WordPress sites with the plugin installed and active

Discovery Timeline

• 2025-01-23 - CVE-2024-13422 published to NVD
• 2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-13422

Vulnerability Analysis

The plugin accepts a url parameter and reflects its value back into the HTML response without applying appropriate sanitization or output escaping. Because the parameter value is rendered directly into the page context, an attacker can supply JavaScript payloads that the browser interprets as executable code. The attack requires user interaction, typically achieved through phishing or social engineering to deliver a crafted link. Successful exploitation runs script in the origin of the vulnerable WordPress site, exposing session cookies, authentication tokens, and any actions available to the victim.

Root Cause

The root cause is missing input validation and missing output encoding on the url request parameter in seo-blogger-to-wordpress.php around line 356. WordPress provides helper functions such as esc_url(), esc_html(), and esc_attr() for context-aware escaping, but the affected code path emits the parameter without applying them. This gap allows attacker-controlled markup to reach the DOM unmodified.

Attack Vector

Exploitation is network-based and unauthenticated. An attacker crafts a URL pointing to the vulnerable plugin endpoint with a malicious payload embedded in the url parameter. The attacker then distributes the link via email, chat, forum posts, or malvertising. When a logged-in WordPress user visits the link, the injected script executes in the context of the WordPress site. Because the CVSS scope is Changed, the impact can extend beyond the vulnerable component to other resources sharing the browser origin. Refer to the Wordfence Vulnerability Report and the WordPress Plugin Code Snippet for the specific vulnerable code location.

Detection Methods for CVE-2024-13422

Indicators of Compromise

• HTTP requests to plugin endpoints containing <script>, javascript:, onerror=, or onload= substrings in the url query parameter
• URL-encoded XSS payloads such as %3Cscript%3E or %3Cimg targeting the plugin path
• Referrer logs showing external sources delivering crafted links to WordPress admin users
• Unexpected outbound requests from administrator browsers to attacker-controlled domains

Detection Strategies

• Inspect web server access logs for url parameter values containing HTML tags or JavaScript event handlers
• Deploy Web Application Firewall (WAF) rules that block reflected XSS payload patterns targeting WordPress plugin paths
• Monitor Content Security Policy (CSP) violation reports for inline script execution attempts
• Correlate suspicious query strings with subsequent authenticated administrative actions

Monitoring Recommendations

• Enable verbose logging on the WordPress site and forward events to a centralized analytics platform
• Alert on anomalous administrator sessions initiated shortly after a click on an externally referred URL
• Track plugin version inventory across managed WordPress deployments to identify unpatched hosts
• Review browser telemetry for administrator endpoints for signs of DOM-based script execution

How to Mitigate CVE-2024-13422

Immediate Actions Required

• Deactivate and remove the SEO Blogger to WordPress Migration using 301 Redirection plugin until a patched version is confirmed available
• Audit WordPress user accounts for unexpected privilege changes or new administrator accounts
• Force password resets and invalidate active sessions for administrator accounts on affected sites
• Apply WAF rules that filter script tags and JavaScript URI schemes on the affected plugin path

Patch Information

No patched version has been referenced in the NVD entry at the time of publication. Administrators should monitor the WordPress plugin repository and the Wordfence Vulnerability Report for updates. Until an official fix is released, the safest remediation is removal of the plugin.

Workarounds

• Uninstall the plugin if 301 redirection functionality is not business-critical
• Deploy a strict Content Security Policy that disallows inline scripts and untrusted script sources
• Restrict access to WordPress admin URLs by IP allowlist to limit exposure of authenticated sessions
• Educate administrators to avoid clicking untrusted links while authenticated to WordPress

# Example CSP header to reduce reflected XSS impact
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self'"