MAL-2026-98 Malicious code in py-publish-test-0126 (PyPI)
Malicious package
Published
MAL-2026-98 is a malicious package: py-publish-test-0126 (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-2026-98/ (Markdown: https://insights.sbomify.com/MAL-2026-98/index.md)
- Package
- py-publish-test-0126
- Registry
- PyPI
What is MAL-2026-98?
MAL-2026-98 is a malicious package in py-publish-test-0126, published on 6 Jan 2026.
Official description
Dependency confusion demonstration package with reporting through a decorator function
Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.
Campaign: 2025-12-sec-lab-it
Reasons (based on the campaign):
dependency-confusion
The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.
typosquatting
What should I do about MAL-2026-98?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.