MAL-2025-191654 Malicious code in pygments-richstyle (PyPI)
Malicious package
Published
MAL-2025-191654 is a malicious package: pygments-richstyle (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-2025-191654/ (Markdown: https://insights.sbomify.com/MAL-2025-191654/index.md)
- Package
- pygments-richstyle
- Registry
- PyPI
What is MAL-2025-191654?
MAL-2025-191654 is a malicious package in pygments-richstyle, published on 31 Oct 2025.
Official description
Packages silently decrypt content hidden in a dependency and load them as Python extension modules.
In the first wave, those are copies of legitimate aiohttp and aiohappyeyeballs packages. In the second wave, malicious packages created good-looking forks of legitimate rich and pigments packages.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-10-asynhttp
Reasons (based on the campaign):
typosquatting
exfiltration-generic
obfuscation
clones-real-package
native-extension
What should I do about MAL-2025-191654?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.