CVE-2019-15827 : Vulnerability Insights and Analysis

The subdomain parameter in versions of the onesignal-free-web-push-notifications plugin prior to 1.17.8 for WordPress contains a cross-site scripting (XSS) vulnerability.

Understanding CVE-2019-15827

This CVE identifies a specific vulnerability in the onesignal-free-web-push-notifications plugin for WordPress.

What is CVE-2019-15827?

The onesignal-free-web-push-notifications plugin before version 1.17.8 for WordPress is susceptible to cross-site scripting (XSS) attacks through the subdomain parameter.

The Impact of CVE-2019-15827

This vulnerability could allow attackers to execute malicious scripts in the context of a user's browser, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2019-15827

The technical aspects of this CVE are as follows:

Vulnerability Description

The onesignal-free-web-push-notifications plugin version prior to 1.17.8 for WordPress is vulnerable to XSS via the subdomain parameter.

Affected Systems and Versions

Product: onesignal-free-web-push-notifications plugin
Vendor: N/A
Versions affected: All versions prior to 1.17.8

Exploitation Mechanism

The vulnerability can be exploited by injecting malicious scripts into the subdomain parameter, which are then executed in the context of the user's browser.

Mitigation and Prevention

To address CVE-2019-15827, the following steps are recommended:

Immediate Steps to Take

Update the onesignal-free-web-push-notifications plugin to version 1.17.8 or later.
Consider disabling the affected plugin until it can be updated to a secure version.

Long-Term Security Practices

Regularly monitor for plugin updates and security advisories.
Implement web application firewalls to help mitigate XSS attacks.

Patching and Updates

Apply patches and updates provided by the plugin developer promptly to address security vulnerabilities.