CVE-2020-35936 Explained : Impact and Mitigation

Stored Cross-Site Scripting (XSS) vulnerabilities in the Post Grid plugin before 2.0.73 for WordPress allow remote authenticated attackers to import layouts including JavaScript via a crafted payload.

Understanding CVE-2020-35936

This CVE involves a Stored Cross-Site Scripting vulnerability in the Post Grid plugin for WordPress.

What is CVE-2020-35936?

The vulnerability allows remote authenticated attackers to import layouts with malicious JavaScript via a crafted payload.
The attack must be executed with the action set to post_grid_import_xml_layouts.

The Impact of CVE-2020-35936

CVSS Score: 7.5 (High)
Severity: High
Attack Vector: Network
Confidentiality, Integrity, and Availability Impact: High
Privileges Required: Low
User Interaction: None

Technical Details of CVE-2020-35936

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows for the execution of malicious JavaScript code via a crafted payload in the source parameter.

Affected Systems and Versions

Affected Version: Post Grid plugin before 2.0.73 for WordPress

Exploitation Mechanism

Attackers can exploit this vulnerability by importing layouts containing malicious JavaScript via a crafted payload in the source parameter.

Mitigation and Prevention

Protecting systems from CVE-2020-35936 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the Post Grid plugin to version 2.0.73 or newer.
Monitor for any suspicious activities related to layout imports.

Long-Term Security Practices

Regularly update all plugins and themes to their latest versions.
Implement security measures to prevent XSS attacks.

Patching and Updates

Apply patches and security updates promptly to mitigate the risk of exploitation.