CVE-2020-26035 : What You Need to Know

An issue was discovered in Zammad before 3.4.1. There is Stored XSS via a Tags element in a Ticket.

Understanding CVE-2020-26035

This CVE identifies a vulnerability in Zammad that allows Stored Cross-Site Scripting (XSS) through a Tags element in a Ticket.

What is CVE-2020-26035?

CVE-2020-26035 is a security vulnerability found in Zammad versions prior to 3.4.1, enabling attackers to execute malicious scripts via a Tags element within a Ticket.

The Impact of CVE-2020-26035

This vulnerability could be exploited by malicious actors to inject and execute arbitrary scripts within the context of the affected Zammad application, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2020-26035

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability in Zammad before version 3.4.1 allows for Stored XSS attacks via a Tags element in a Ticket, posing a risk of executing malicious scripts.

Affected Systems and Versions

Affected Product: Zammad
Affected Versions: Versions prior to 3.4.1

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the Tags element of a Ticket, which, when executed, can compromise the security of the Zammad application.

Mitigation and Prevention

To address CVE-2020-26035 and enhance security, follow these mitigation strategies:

Immediate Steps to Take

Update Zammad to version 3.4.1 or later to patch the vulnerability.
Regularly monitor and review Tickets for any suspicious Tags or script injections.

Long-Term Security Practices

Implement input validation mechanisms to sanitize user inputs and prevent XSS attacks.
Educate users and administrators about the risks of executing untrusted scripts within the application.

Patching and Updates

Stay informed about security advisories and promptly apply patches released by Zammad to address known vulnerabilities.