CVE-2021-39341 Explained : Impact and Mitigation

This article provides details about CVE-2021-39341, which involves the OptinMonster WordPress plugin being vulnerable to sensitive information disclosure and unauthorized setting updates.

Understanding CVE-2021-39341

CVE-2021-39341 pertains to an issue in the OptinMonster plugin that allows for unauthorized changes to settings and exposure of sensitive information.

What is CVE-2021-39341?

The vulnerability in the OptinMonster WordPress plugin allows attackers to inject malicious web scripts due to inadequate authorization validation.

The Impact of CVE-2021-39341

The vulnerability has a CVSS v3.1 base score of 8.2, indicating a high severity issue with a significant impact on confidentiality.

Technical Details of CVE-2021-39341

This section delves into specific technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from insufficient authorization validation in the ~/OMAPI/RestApi.php file.

Affected Systems and Versions

Product: OptinMonster
Vendor: OptinMonster
Versions affected: <= 2.6.4

Exploitation Mechanism

Attackers exploit the vulnerability to inject malicious web scripts on websites using the vulnerable plugin.

Mitigation and Prevention

Explore the steps to mitigate and prevent exploitation of the CVE.

Immediate Steps to Take

Update the OptinMonster plugin to version 2.6.5 or higher.

Long-Term Security Practices

Regularly update plugins and software to prevent vulnerabilities.
Conduct security audits to identify and address any security gaps.

Patching and Updates

Ensure timely patching of software and plugins to address known vulnerabilities.