Malicious Code Detected in h-jsencrypt Package - Security Alert
Summary
MAL-2026-495: Malicious code in h-jsencrypt (npm). Affected versions are not published. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The h-jsencrypt package is a JavaScript library used for encrypting and decrypting data using RSA. It is commonly utilized in web applications to secure sensitive information. However, recent findings have revealed that this package contains malicious code, posing significant security risks to applications that rely on it.
Vulnerability Detail
The vulnerability originates from the h-jsencrypt package, which has been identified to contain malicious code that could compromise the integrity and security of applications using it. This malicious code may allow unauthorized access to sensitive data, leading to potential data breaches and exploitation of user information. The vulnerability affects all versions of the package starting from its introduction, making it critical for users to take immediate action.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall h-jsencryptIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, consider removing the h-jsencrypt package from your project until a secure version is available. You can do this by executing the following command: npm uninstall h-jsencrypt. Alternatively, you may explore other encryption libraries that do not have known vulnerabilities.
Conclusion
The h-jsencrypt package has been found to contain malicious code, posing serious security risks to applications utilizing it. Immediate action is required to update or remove the package to safeguard sensitive information. Utilize tools like Vulert to monitor your application for vulnerabilities effectively.
See every vulnerability recorded for h-jsencrypt →
FAQ
The h-jsencrypt package is used for encrypting and decrypting data using RSA in JavaScript applications.
You can check if your application is affected by using Vulert, which monitors open-source vulnerabilities in your software. Visit Vulert Scanner to analyze your package-lock.json without any signup.
Using the compromised h-jsencrypt package can lead to unauthorized access to sensitive data, data breaches, and exploitation of user information.
Currently, there is no specific patched version available. It is recommended to update the package as soon as a secure version is released.
If immediate updates are not possible, consider removing the package or using alternative encryption libraries until a secure version is available.
