MAL-2026-1999 Malicious code in cfgmgr-syn (PyPI)
Malicious package
Published
MAL-2026-1999 is a malicious package: cfgmgr-syn (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-2026-1999/ (Markdown: https://insights.sbomify.com/MAL-2026-1999/index.md)
- Package
- cfgmgr-syn
- Registry
- PyPI
What is MAL-2026-1999?
MAL-2026-1999 is a malicious package in cfgmgr-syn, published on 20 Mar 2026.
Official description
The code exfiltrates content copied to clipboard content to a hardcoded location. The code is obfuscated and has a persistence mechanism.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-03-cfgmgr-syn
Reasons (based on the campaign):
clipboard-stealing
obfuscation
exfiltration-generic
persistence
What should I do about MAL-2026-1999?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.