CVE-2021-42946 Explained : Impact and Mitigation

A Cross Site Scripting (XSS) vulnerability exists in htmly.2.8.1 via the Copyright field in the /admin/config page.

Understanding CVE-2021-42946

This CVE describes a Cross Site Scripting vulnerability in htmly.2.8.1.

What is CVE-2021-42946?

CVE-2021-42946 is a Cross Site Scripting (XSS) vulnerability found in htmly.2.8.1 through the Copyright field on the /admin/config page.

The Impact of CVE-2021-42946

The vulnerability allows attackers to execute malicious scripts in a victim's browser, potentially leading to data theft, cookie stealing, and unauthorized actions.

Technical Details of CVE-2021-42946

CVE-2021-42946 Technical Details:

Vulnerability Description

Type: Cross Site Scripting (XSS)
Location: htmly.2.8.1 /admin/config page
Exploit: Copyright field

Affected Systems and Versions

Affected Product: N/A
Affected Version: htmly.2.8.1

Exploitation Mechanism

Attacker injects malicious scripts via the Copyright field to execute unauthorized actions on the victim's browser.

Mitigation and Prevention

Steps to mitigate the CVE-2021-42946 vulnerability:

Immediate Steps to Take

Update to the latest version of htmly and patch the Copyright field to sanitize inputs.
Implement Content Security Policy (CSP) to mitigate XSS attacks.

Long-Term Security Practices

Regularly scan and monitor the application for vulnerabilities like XSS.
Educate developers on secure coding practices to prevent XSS vulnerabilities.
Conduct security audits to identify and remediate potential security risks.

Patching and Updates

Follow vendor security advisories for patches and updates related to htmly.