CVE-2021-28935 : What You Need to Know

CMS Made Simple (CMSMS) 2.2.15 allows authenticated XSS via the /admin/addbookmark.php script through the Site Admin > My Preferences > Title field.

Understanding CVE-2021-28935

This CVE involves a cross-site scripting vulnerability in CMS Made Simple version 2.2.15.

What is CVE-2021-28935?

CVE-2021-28935 is a security vulnerability in CMS Made Simple (CMSMS) 2.2.15 that allows attackers to execute cross-site scripting attacks through a specific script.

The Impact of CVE-2021-28935

This vulnerability can be exploited by authenticated users to inject malicious scripts into the Title field, leading to potential XSS attacks and unauthorized access to sensitive information.

Technical Details of CVE-2021-28935

The technical details of this CVE include:

Vulnerability Description

Authenticated XSS can be executed via the /admin/addbookmark.php script through the Site Admin > My Preferences > Title field in CMSMS 2.2.15.

Affected Systems and Versions

CMS Made Simple version 2.2.15 is affected by this vulnerability.

Exploitation Mechanism

Attackers who are authenticated users can exploit this vulnerability by inserting malicious scripts into the Title field of the Site Admin preferences.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-28935, consider the following steps:

Immediate Steps to Take

Update CMS Made Simple to the latest version to eliminate the vulnerability.
Avoid clicking on suspicious links or visiting untrusted websites to prevent XSS attacks.

Long-Term Security Practices

Regularly monitor security advisories and updates from CMS Made Simple.
Implement strong authentication mechanisms to prevent unauthorized access.

Patching and Updates

Stay informed about security patches released by CMS Made Simple and apply them promptly to ensure protection against known vulnerabilities.