CVE-2021-25977 : Vulnerability Insights and Analysis

PiranhaCMS versions 7.0.0 to 9.1.1 are vulnerable to stored Cross-Site Scripting (XSS) attacks due to improper sanitization of page titles. This allows low-privileged users to execute arbitrary JavaScript by creating specially crafted page titles.

Understanding CVE-2021-25977

This CVE involves a security vulnerability in Piranha CMS versions 7.0.0 to 9.1.1 that enables stored Cross-Site Scripting (XSS) attacks.

What is CVE-2021-25977?

In PiranhaCMS, versions 7.0.0 to 9.1.1 are vulnerable to stored XSS due to the page title improperly sanitized. By creating a page with a specially crafted page title, a low privileged user can trigger arbitrary JavaScript execution.

The Impact of CVE-2021-25977

The vulnerability can be exploited by attackers to inject malicious scripts into web pages viewed by other users, potentially leading to the theft of sensitive information, session hijacking, or other malicious activities.

Technical Details of CVE-2021-25977

The following are technical details related to the CVE-2021-25977 vulnerability in Piranha CMS:

Vulnerability Description

The vulnerability arises from the improper sanitization of page titles, allowing attackers to inject malicious scripts into the application.

Affected Systems and Versions

PiranhaCMS versions 7.0.0 through 9.1.1 are affected by this vulnerability.

Exploitation Mechanism

Low-privileged users can exploit this vulnerability by creating pages with specially crafted titles to execute arbitrary JavaScript.

Mitigation and Prevention

To address the CVE-2021-25977 vulnerability in Piranha CMS, users are advised to take these immediate steps and follow long-term security practices:

Immediate Steps to Take

Update Piranha CMS to version 9.2.0 to mitigate the vulnerability.

Long-Term Security Practices

Regularly monitor and apply security patches released by PiranhaCMS.
Educate users about safe practices to prevent XSS attacks.

Patching and Updates

It is crucial to stay informed about security updates and promptly install patches to protect against potential vulnerabilities.