MAL-2026-2233 Malicious code in lightmock (PyPI)
Malicious package
Published
MAL-2026-2233 is a malicious package: lightmock (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-2026-2233/ (Markdown: https://insights.sbomify.com/MAL-2026-2233/index.md)
- Package
- lightmock
- Registry
- PyPI
What is MAL-2026-2233?
MAL-2026-2233 is a malicious package in lightmock, published on 26 Mar 2026.
Official description
Clone of a legitimate package. During import, heavily obfuscate code downloads next stages and finally exfiltrates sensitive data, including data from web browsers.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-03-lightmock
Reasons (based on the campaign):
clones-real-package
obfuscation
infostealer
exfiltration-browser-data
exfiltration-crypto
Downloads and executes a remote malicious script.
What should I do about MAL-2026-2233?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.