CVE-2021-41261 Explained : Impact and Mitigation

Galette is a membership management web application that was vulnerable to stored cross-site scripting attacks in versions before 0.9.6.

Understanding CVE-2021-41261

Galette experienced a stored cross-site scripting vulnerability that could allow site admins to manipulate preferences, impacting the confidentiality and integrity of the system.

What is CVE-2021-41261?

Galette, a membership management web app for non-profits, had a stored XSS vulnerability pre version 0.9.6.

The Impact of CVE-2021-41261

Base Score: 8.1 (High)
Severity: High
Confidentiality Impact: High
Integrity Impact: High
Privileges Required: High

Technical Details of CVE-2021-41261

This section provides insights into the vulnerability's description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in Galette allowed stored cross-site scripting attacks via the preferences footer, which could only be altered by site admins.

Affected Systems and Versions

Affected Product: Galette
Vendor: Galette
Vulnerable Versions: < 0.9.6

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Scope: Changed
User Interaction: Required

Mitigation and Prevention

To secure systems from CVE-2021-41261, immediate steps, long-term security measures, and the importance of patching and updates are essential.

Immediate Steps to Take

Upgrade to version 0.9.6 to mitigate the vulnerability.
Regularly monitor for security advisories from Galette.

Long-Term Security Practices

Educate admins on secure coding practices to prevent XSS vulnerabilities.
Implement input validation and output encoding in web applications.

Patching and Updates

Ensure timely updates to Galette to patch vulnerabilities and enhance security measures.