MAL-2026-35 Malicious code in aiihttp (PyPI)
Malicious package
Published
MAL-2026-35 is a malicious package: aiihttp (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-2026-35/ (Markdown: https://insights.sbomify.com/MAL-2026-35/index.md)
- Package
- aiihttp
- Registry
- PyPI
What is MAL-2026-35?
MAL-2026-35 is a malicious package in aiihttp, published on 4 Jan 2026.
Official description
Obfuscated code downloads an encrypted binary blob, which is malware finally starting cryptomining. After starting the malware, the Python package uninstall itself and installs the legitimate package, covering tracks of the infection.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-01-aiihttp
Reasons (based on the campaign):
typosquatting
Downloads and executes a remote executable.
malware
cryptominer
obfuscation
covering-tracks
What should I do about MAL-2026-35?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.