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CVE-2020-26298 : Security Advisory and Response

Learn about CVE-2020-26298, an injection vulnerability in Redcarpet Ruby library, enabling cross-site scripting attacks. Find mitigation steps and update recommendations here.

CVE-2020-26298 involves an injection vulnerability in Redcarpet, a Ruby library for Markdown processing, allowing for a cross-site scripting attack.

Understanding CVE-2020-26298

What is CVE-2020-26298?

In Redcarpet versions prior to 3.5.1, a vulnerability exists that enables an injection attack, potentially leading to cross-site scripting.

The Impact of CVE-2020-26298

This vulnerability could be exploited to execute malicious scripts on a user's browser, compromising sensitive data or performing unauthorized actions.

Technical Details of CVE-2020-26298

Vulnerability Description

The issue in Redcarpet before version 3.5.1 arises from the lack of HTML escaping during quote processing, even when the

:escape_html
option is used.

Affected Systems and Versions

        Vendor: vmg
        Product: redcarpet
        Affected Versions: < 3.5.1

Exploitation Mechanism

The vulnerability allows attackers to inject malicious scripts into the application, potentially leading to cross-site scripting attacks.

Mitigation and Prevention

Immediate Steps to Take

        Upgrade Redcarpet to version 3.5.1 or later to mitigate the vulnerability.
        Implement input validation and output encoding to prevent injection attacks.

Long-Term Security Practices

        Regularly update software libraries and dependencies to patch known vulnerabilities.
        Conduct security audits and code reviews to identify and address potential security flaws.

Patching and Updates

Ensure that all software components, including Redcarpet, are kept up to date with the latest security patches and fixes.

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