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CVE-2020-20406 Explained : Impact and Mitigation

Learn about CVE-2020-20406, a stored XSS vulnerability in Elementor Page Builder 2.9.2 and earlier versions. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.

A stored XSS vulnerability exists in the Custom Link Attributes control Affect function in Elementor Page Builder 2.9.2 and earlier versions due to inadequate filtering on the link custom attributes.

Understanding CVE-2020-20406

This CVE involves a stored XSS vulnerability in Elementor Page Builder.

What is CVE-2020-20406?

This vulnerability allows attackers to execute malicious scripts in the context of a user's browser on the affected website.

The Impact of CVE-2020-20406

The vulnerability can lead to unauthorized access, data theft, defacement, and other forms of cyber attacks.

Technical Details of CVE-2020-20406

Elementor Page Builder is affected by a stored XSS vulnerability.

Vulnerability Description

The vulnerability arises from inadequate filtering on the link custom attributes in the Custom Link Attributes control Affect function.

Affected Systems and Versions

        Elementor Page Builder 2.9.2 and earlier versions

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the link custom attributes, which are not properly filtered.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-20406.

Immediate Steps to Take

        Update Elementor Page Builder to the latest version that contains a patch for this vulnerability.
        Implement strict input validation and output encoding to prevent XSS attacks.
        Regularly monitor and audit custom attributes and user inputs for suspicious content.

Long-Term Security Practices

        Educate developers and administrators on secure coding practices to prevent similar vulnerabilities.
        Conduct regular security assessments and penetration testing to identify and address potential security weaknesses.

Patching and Updates

        Stay informed about security updates and patches released by Elementor Page Builder and apply them promptly to ensure protection against known vulnerabilities.

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