CVE-2021-27370 : What You Need to Know

The Contact page in Monica 2.19.1 allows stored XSS via the Last Name field.

Understanding CVE-2021-27370

This CVE details a vulnerability in Monica 2.19.1 that enables stored cross-site scripting (XSS) through the Last Name field.

What is CVE-2021-27370?

The CVE-2021-27370 vulnerability exists in Monica 2.19.1, allowing threat actors to perform stored XSS attacks via the application's Last Name field.

The Impact of CVE-2021-27370

The impact of this vulnerability could lead to unauthorized access, data theft, and manipulation of user information stored in Monica 2.19.1.

Technical Details of CVE-2021-27370

This section provides technical insights into the vulnerability.

Vulnerability Description

The vulnerability in Monica 2.19.1 enables threat actors to execute stored cross-site scripting attacks by manipulating the Last Name field.

Affected Systems and Versions

Monica 2.19.1 is confirmed to be affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by inputting malicious scripts into the Last Name field, which will be executed when viewed by other users.

Mitigation and Prevention

Protecting systems from CVE-2021-27370 is crucial to ensure data security.

Immediate Steps to Take

Users are advised to update Monica to a patched version that addresses the vulnerability and avoid entering untrusted data into fields.

Long-Term Security Practices

Implementing input validation and output encoding practices can help mitigate the risks of XSS vulnerabilities in web applications.

Patching and Updates

Regularly update Monica to the latest version to ensure that known vulnerabilities are patched and security measures are up to date to prevent exploitation.