MAL-2026-2141 Malicious code in corexloader (PyPI)
Malicious package
Published
MAL-2026-2141 is a malicious package: corexloader (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-2026-2141/ (Markdown: https://insights.sbomify.com/MAL-2026-2141/index.md)
- Package
- corexloader
- Registry
- PyPI
What is MAL-2026-2141?
MAL-2026-2141 is a malicious package in corexloader, published on 24 Mar 2026.
Official description
During importing, code starts a malicious script performing exfiltration of sensitive data and credentials from e.g. browsers and Discord clients to a remote location.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-03-coreloader
Reasons (based on the campaign):
infostealer
exfiltration-credentials
exfiltration-browser-data
spyware-like
What should I do about MAL-2026-2141?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.