Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kunal Custom 404 Pro custom-404-pro.This issue affects Custom 404 Pro: from n/a through <= 3.11.1.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kunal Nagar Custom 404 Pro allows Stored XSS.This issue affects Custom 404 Pro: from n/a through 3.10.0.

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Kunal Nagar Custom 404 Pro plugin <= 3.8.1 versions.

The Custom 404 Pro WordPress plugin before 3.8.1 does not properly sanitize database inputs, leading to multiple SQL Injection vulnerabilities.

The Custom 404 Pro WordPress plugin before 3.7.3 does not escape some URLs before outputting them in attributes, leading to Reflected Cross-Site Scripting.

Auth. SQL Injection') vulnerability in Kunal Nagar Custom 404 Pro plugin <= 3.7.0 versions.

The Custom 404 Pro plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.7.1. This is due to missing or incorrect nonce validation on the custom_404_pro_admin_init function. This makes it possible for unauthenticated attackers to delete logs, via forged request granted they can trick a site administrator into performing an action such as clicking on a link.

The custom-404-pro plugin before 3.2.8 for WordPress has reflected XSS, a different vulnerability than CVE-2019-14789.

The Custom 404 Pro plugin 3.2.8 for WordPress has XSS via the wp-admin/admin.php?page=c4p-main page parameter.