MAL-2026-870 Malicious code in b10connoisseur (PyPI)
- Package
- b10connoisseur
- Registry
- PyPI
What is MAL-2026-870?
MAL-2026-870 is a malicious package in b10connoisseur, published on 12 Feb 2026.
Official description
During installation, package attempts to enumerate the environment and exfiltrates potentially sensitive data to a hardcoded location.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-02-b10connoisseur
Reasons (based on the campaign):
exfiltration-generic
exfiltration-env-variables
The package overrides the install command in setup.py to execute malicious code during installation.
The OpenSSF Package Analysis project identified 'b10connoisseur' @ 0.12.0 (pypi) as malicious.
It is considered malicious because:
- The package executes one or more commands associated with malicious behavior.
What should I do about MAL-2026-870?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.