b10connoisseur

GHSA-rcqc-883g-vf88

Malicious code in b10connoisseur (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.1.0`

## Source: kam193 (3b004210d186f2b625699f4d863f3ba95407f836eadfee0168be63f85124b5b7)
During installation, package attempts to enumerate the environment and exfiltrates potentially sensitive data to a hardcoded location.


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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.

## Source: ossf-package-analysis (c734377588989b8ed547518a07d2d0fd2e92265be0539f4432d06b994e9e6d17)
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.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/b10connoisseur/MAL-2026-870.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/b10connoisseur
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/b10connoisseur/MAL-2026-870.json
- https://github.com/advisories/GHSA-rcqc-883g-vf88

Compromised versions (1)

= 0.1.0

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.