CVE-2020-10196 Explained : Impact and Mitigation

An XSS vulnerability in the popup-builder plugin before 3.64.1 for WordPress allows remote attackers to inject arbitrary JavaScript into existing popups via an unsecured ajax action in com/classes/Ajax.php.

Understanding CVE-2020-10196

This CVE involves a Cross-Site Scripting (XSS) vulnerability in the popup-builder plugin for WordPress, enabling attackers to inject malicious JavaScript into popups.

What is CVE-2020-10196?

The vulnerability allows unauthenticated attackers to insert harmful JavaScript into popup fields by exploiting an unsecured ajax action, potentially affecting visitors to the compromised page.

The Impact of CVE-2020-10196

Attackers can execute arbitrary JavaScript in visitors' browsers through manipulated popups, bypassing many Web Application Firewalls (WAFs).

Technical Details of CVE-2020-10196

The technical aspects of this CVE include:

Vulnerability Description

Unsecured ajax action in com/classes/Ajax.php allows for JavaScript injection into popups.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Before 3.64.1

Exploitation Mechanism

Attackers exploit the sgpb_autosave action in wp-admin/admin-ajax.php to insert malicious JavaScript into popup fields.

Mitigation and Prevention

Protect your systems from CVE-2020-10196 with these measures:

Immediate Steps to Take

Update the popup-builder plugin to version 3.64.1 or newer.
Monitor and sanitize input data to prevent XSS attacks.

Long-Term Security Practices

Regularly audit and update plugins to address security vulnerabilities.
Implement Content Security Policy (CSP) headers to mitigate XSS risks.

Patching and Updates

Stay informed about security patches and updates for all WordPress plugins to prevent exploitation.