MAL-2026-3695 Malicious code in pirxcypackage (PyPI)
Malicious package
Published
MAL-2026-3695 is a malicious package: pirxcypackage (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-2026-3695/ (Markdown: https://insights.sbomify.com/MAL-2026-3695/index.md)
- Package
- pirxcypackage
- Registry
- PyPI
What is MAL-2026-3695?
MAL-2026-3695 is a malicious package in pirxcypackage, published on 12 May 2026.
Official description
PirxcyPackage/init.py fetches https://pastebin.com/raw/91tFF63S and passes the response body to exec() on every import. This is a textbook remote-code-execution supply-chain pattern: the payload is mutable, unauthenticated, unsigned, and controlled by a third-party paste owner, so any installer importing this package runs arbitrary attacker-chosen Python. The staging via Pastebin also ensures static review of the wheel cannot observe actual behavior. Installer harm is direct and unambiguous.
What should I do about MAL-2026-3695?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.