CVE-2020-27666 Explained : Impact and Mitigation

Strapi before 3.2.5 has stored XSS in the wysiwyg editor's preview feature.

Understanding CVE-2020-27666

Strapi before version 3.2.5 is vulnerable to stored XSS in the wysiwyg editor's preview feature.

What is CVE-2020-27666?

CVE-2020-27666 is a vulnerability in Strapi versions prior to 3.2.5 that allows for stored cross-site scripting (XSS) attacks through the wysiwyg editor's preview feature.

The Impact of CVE-2020-27666

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

Technical Details of CVE-2020-27666

Strapi before version 3.2.5 is susceptible to stored XSS attacks in the wysiwyg editor's preview feature.

Vulnerability Description

The vulnerability in Strapi allows an attacker to store malicious scripts in the wysiwyg editor's preview feature, which can then be executed in the context of a user's session.

Affected Systems and Versions

Product: Strapi
Vendor: Strapi
Versions affected: All versions before 3.2.5

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the wysiwyg editor's preview feature, which are then executed when a user views the affected content.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risk posed by CVE-2020-27666.

Immediate Steps to Take

Upgrade Strapi to version 3.2.5 or later to eliminate the vulnerability.
Avoid interacting with untrusted content or preview features in the wysiwyg editor.

Long-Term Security Practices

Regularly update and patch software to ensure the latest security fixes are in place.
Educate users on safe browsing practices and the risks of interacting with untrusted content.

Patching and Updates

Apply patches and updates provided by Strapi promptly to address security vulnerabilities and enhance overall system security.