Attention WordPress Website Owners, We are issuing an urgent security alert to all WordPress website owners using the 404 to 301 plugin. Your website’s security may be at risk due to a high-severity Cross-Site Scripting (XSS) vulnerability recently discovered in the plugin. This security flaw exposes your website to potential malware threats and other security risks, making immediate action essential to protect your website and visitors.

The security flaw was identified and responsibly reported by Rafie Muhammad of Patchstack, highlighting the importance of vigilant security researchers in maintaining a secure WordPress environment.


The XSS vulnerability in the 404 to 301 plugin has been classified as high severity, with a significant CVSS 3.1 score of 7.1. This vulnerability poses a substantial risk of exploitation and can have severe consequences for your website’s security.

Affected Versions:

If your website is running any version of the 404 to 301 plugin up to version 3.0.5, it is susceptible to this security flaw. Taking immediate action is vital to protect your website and your visitors from potential attacks.


Exploiting this vulnerability empowers malicious actors to inject harmful scripts, such as redirects, advertisements, or other HTML payloads, into your website. When unsuspecting guests visit your site, these malicious scripts are executed, potentially leading to detrimental consequences.


To fortify your website’s defenses and mitigate potential threats, immediate action is imperative:

  1. Update to the Latest Version: Update the WordPress 404 to 301 plugin to version 3.0.6 or higher without delay. The latest version includes essential patches to eliminate the XSS vulnerability and bolster overall plugin security.
  2. Regular Security Audits: Conduct periodic security audits of your WordPress website to identify and address potential vulnerabilities proactively.
  3. Educate Your Team: Educate your website administrators and staff about WordPress security best practices to prevent security breaches.
  4. Monitor for Updates: Stay informed about the latest security updates and advisories from the 404 to 301 plugin developers. Regularly check for plugin updates and apply them promptly.

In the realm of WordPress security, proactive measures are indispensable to protect against emerging threats and potential WordPress vulnerability exploits. By staying vigilant and promptly addressing vulnerabilities like this XSS flaw, you establish a resilient WordPress security posture and enhance user trust.

Remember, WordPress security is a shared responsibility, and taking immediate action to update vulnerable plugins is pivotal in maintaining website integrity and safeguarding user data. Act decisively to secure your WordPress site and create a safe digital environment for your visitors and users.