CVE-2020-26120 : What You Need to Know

XSS exists in the MobileFrontend extension for MediaWiki before 1.34.4 due to mishandling of section.line during regex section line replacement from PageGateway. This vulnerability allows an attacker to trigger an XSS attack using crafted HTML.

Understanding CVE-2020-26120

This CVE involves a cross-site scripting (XSS) vulnerability in the MobileFrontend extension for MediaWiki.

What is CVE-2020-26120?

CVE-2020-26120 is an XSS vulnerability in MediaWiki's MobileFrontend extension that arises from improper handling of section.line during regex section line replacement from PageGateway. By exploiting this issue, an attacker can execute an XSS attack through jQuery's parseHTML method.

The Impact of CVE-2020-26120

The vulnerability can be exploited by an attacker to launch an XSS attack, potentially leading to unauthorized access, data theft, or other malicious activities.

Technical Details of CVE-2020-26120

This section provides technical details about the vulnerability.

Vulnerability Description

The XSS vulnerability in the MobileFrontend extension for MediaWiki before version 1.34.4 allows attackers to trigger XSS attacks by manipulating crafted HTML.

Affected Systems and Versions

Affected System: MobileFrontend extension for MediaWiki
Affected Versions: Versions before 1.34.4

Exploitation Mechanism

The vulnerability is exploited by manipulating the section.line during regex section line replacement from PageGateway, enabling attackers to execute XSS attacks via jQuery's parseHTML method.

Mitigation and Prevention

Protect your systems from CVE-2020-26120 with these mitigation strategies.

Immediate Steps to Take

Update to version 1.34.4 or later of the MobileFrontend extension for MediaWiki.
Implement input validation and output encoding to prevent XSS attacks.

Long-Term Security Practices

Regularly monitor and audit your web applications for security vulnerabilities.
Educate developers on secure coding practices to prevent XSS vulnerabilities.

Patching and Updates

Apply security patches promptly to mitigate known vulnerabilities.