CVE-2019-15838 : Security Advisory and Response

A distinct vulnerability known as reflected XSS has been discovered in the custom-404-pro plugin for WordPress versions earlier than 3.2.8. This vulnerability is separate from the previously reported CVE-2019-14789.

Understanding CVE-2019-15838

A reflected XSS vulnerability in the custom-404-pro plugin for WordPress.

What is CVE-2019-15838?

The custom-404-pro plugin before version 3.2.8 for WordPress is affected by a reflected XSS vulnerability.

The Impact of CVE-2019-15838

This vulnerability could allow an attacker to execute malicious scripts in the context of a victim's browser, potentially leading to unauthorized actions.

Technical Details of CVE-2019-15838

The technical aspects of the vulnerability.

Vulnerability Description

The custom-404-pro plugin for WordPress versions prior to 3.2.8 is susceptible to reflected XSS, distinct from CVE-2019-14789.

Affected Systems and Versions

Product: custom-404-pro plugin
Vendor: WordPress
Versions Affected: Earlier than 3.2.8

Exploitation Mechanism

The vulnerability can be exploited by tricking a user into clicking on a specially crafted link that executes malicious scripts in the user's browser.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2019-15838.

Immediate Steps to Take

Update the custom-404-pro plugin to version 3.2.8 or later.
Be cautious of clicking on untrusted links or visiting suspicious websites.

Long-Term Security Practices

Regularly update all plugins and themes in WordPress.
Implement security plugins or tools to scan for vulnerabilities.

Patching and Updates

Ensure timely installation of security patches and updates for WordPress and its plugins.