Cross-Site Scripting in markdown-to-jsx
Summary
GHSA-ccrp-c664-8p4j: Cross-Site Scripting in markdown-to-jsx. Affects markdown-to-jsx versions < 6.11.4. Fixed in 6.11.4. How to fix ↓
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Background
markdown-to-jsx is an npm package that allows users to convert Markdown syntax into React components. It is commonly used in web applications to render user-generated content or provide a rich text editing experience. However, versions prior to 6.11.4 are vulnerable to Cross-Site Scripting (XSS) attacks. This vulnerability arises from insufficient input sanitization, which can result in the rendering of malicious JavaScript code. Attackers can exploit this by injecting links containing data or VBScript URIs along with a base64-encoded payload.
Vulnerability Detail
The Cross-Site Scripting vulnerability in markdown-to-jsx allows attackers to execute arbitrary JavaScript code in the context of a user's browser. This can lead to various malicious activities, such as stealing sensitive information, manipulating the DOM, or performing actions on behalf of the user. The vulnerability is classified as CWE-79, which refers to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). It has a severity rating of HIGH.
How To Fix
Minimum fixed version
6.11.4
This is the first release that contains the fix.
npm install markdown-to-jsx@6.11.4Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
The markdown-to-jsx package prior to version 6.11.4 is vulnerable to Cross-Site Scripting (XSS) attacks. It is crucial to upgrade to the latest version to protect your application and users from potential security risks. For further assistance with vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for markdown-to-jsx →
FAQ
markdown-to-jsx is an npm package that converts Markdown syntax into React components. It is commonly used in web applications for rendering user-generated content.
Cross-Site Scripting is a type of security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. This can lead to various attacks, such as stealing sensitive information or performing actions on behalf of the user.
If your application uses a version of markdown-to-jsx prior to 6.11.4, it is vulnerable to Cross-Site Scripting attacks. Attackers can exploit this vulnerability to execute arbitrary JavaScript code in the context of your users' browsers.
A Cross-Site Scripting vulnerability can have severe consequences, including the theft of sensitive information, unauthorized actions on behalf of users, and the manipulation of website content.
To mitigate the vulnerability, you should upgrade to version 6.11.4 or later of the markdown-to-jsx package. This version includes fixes for the Cross-Site Scripting vulnerability.
References
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