MAL-2026-3660 Malicious code in numpy-lib (PyPI)
Malicious package
Published
MAL-2026-3660 is a malicious package: numpy-lib (PyPI). Every version was published to cause harm.
Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.
Reference: https://insights.sbomify.com/MAL-2026-3660/ (Markdown: https://insights.sbomify.com/MAL-2026-3660/index.md)
- Package
- numpy-lib
- Registry
- PyPI
What is MAL-2026-3660?
MAL-2026-3660 is a malicious package in numpy-lib, published on 13 May 2026.
Official description
Package installs persistent malware acting as Rat, with the focus of stealing data and modifying copied cryptowallet addresses.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-05-py-requests
Reasons (based on the campaign):
rat
typosquatting
persistence
Downloads and executes a remote malicious script.
crypto-related
clipboard-modify
exfiltration-browser-data
exfiltration-crypto
infostealer
What should I do about MAL-2026-3660?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.