Malicious Code Detected in @postman/pretty-ms Package - Security Alert

@postman/pretty-ms Updated 24 Nov 2025

Summary

24/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-190910: Malicious code in @postman/pretty-ms (npm). Affects @postman/pretty-ms versions 6.1.1 – 6.1.3. No fix is published. How to fix ↓

Free scan

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.

Check my app free

No signup required · Results in about 60 seconds

Upload your dependency manifest or SBOM

Drag & drop your file here or

Java Javascript PHP Python Go Rust Ruby Dart C/C++ Elixir CycloneDX SPDX

Upload a supported dependency manifest or SBOM. No installation or source-code access required.

See supported files and SBOM formats
SBOM sbom.json · bom.json · bom.xml · *.spdx.json · *.cdx.json · *.cdx.xml
Java pom.xml · gradle.lockfile · buildscript-gradle.lockfile
Javascript package-lock.json · yarn.lock · pnpm-lock.yaml
PHP composer.lock
Python poetry.lock · requirements.txt · Pipfile.lock
Go go.mod
Rust Cargo.lock
Ruby Gemfile.lock
Dart pubspec.lock
C/C++ conan.lock
Elixir mix.lock
Enter your work email to receive your report link.

Verify your email to view the full report and start 30 days of continuous monitoring. No credit card required.

Sponsored Lume, the Habilume companion Habilume Habit tracker with a companion that grows with you Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent. App Store Google Play

Background

The @postman/pretty-ms package is a popular npm library used for formatting time durations in a human-readable format. It is widely utilized in various applications for its simplicity and effectiveness in displaying time intervals. However, recent findings have revealed that this package has been compromised, containing malicious code that poses a significant security risk to users.

Vulnerability Detail

The vulnerability originates from a malicious code injection in the @postman/pretty-ms package, specifically in versions 6.1.1, 6.1.2, and 6.1.3. This malicious code can potentially lead to unauthorized access, data breaches, or other harmful actions within applications that rely on this package. The source of this vulnerability has been identified by Amazon Inspector, highlighting the importance of vigilance in monitoring package integrity.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall @postman/pretty-ms

If 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 @postman/pretty-ms package from your project until a secure version is confirmed. You can do this by running: npm uninstall @postman/pretty-ms.

Conclusion

The discovery of malicious code in the @postman/pretty-ms package underscores the importance of maintaining vigilance in software dependencies. Users should promptly update or remove the affected package to safeguard their applications from potential threats.

See every vulnerability recorded for @postman/pretty-ms →

Share this vulnerability

FAQ

The malicious code can perform unauthorized actions, potentially leading to data breaches or system compromises.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without any signup.

Versions 6.1.1, 6.1.2, and 6.1.3 of the @postman/pretty-ms package are known to contain the malicious code.

Yes, users are advised to update to the latest version of the @postman/pretty-ms package to mitigate the risk.

As a temporary measure, consider removing the package from your project until a secure version is available.

Sponsored Lume, the Habilume companion Habilume Habit tracker with a companion that grows with you Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent. App Store Google Play

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall @postman/pretty-ms

If 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 →

Subscribe to Vulert on Telegram
Daily digest of new CVEs, critical and high severity, affected packages and fixes — plus a weekly roundup.
Join the channel →
Help improve this record
Report an issue or send feedback