bash8

GHSA-c22j-84pc-wqhh

Malicious code in bash8 (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.0.0`

## Source: amazon-inspector (e665213ba552605420b2269888e041b8b8af4c9e8314d731a8aa246f0fefd748)
Package is published as 'bash8' (matching an existing PyPI bash linter) but installs a top-level module named 'ca_certificates' whose only content is a stub `__version__ = "0.0.0"` and an `info()` function returning the string 'This is a dummy bash8 package for PyPI.' Author metadata is the placeholder 'Your Name <[email protected]>'. The package contains no install hooks, no network I/O, no subprocess execution, and no credential reads — it is functionally inert. The installable module name 'ca_certificates' would shadow imports of that identifier in any environment where this package is installed, and the distribution name collides with an existing linter. Name confusion alone, without an installer-harm payload, is a subjective signal best resolved by a human reviewer.

## Source: kam193 (cc82142b2f705e97dabfd2945e1f4686296211b857a6ccda5195803650bddf63)
Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.


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Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.


Campaign: GENERIC-standard-pypi-install-pentest


Reasons (based on the campaign):


 - The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.


 - The package overrides the install command in setup.py to execute malicious code during installation.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/bash8/MAL-2026-5768.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/bash8
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/bash8/MAL-2026-5768.json
- https://pypi.org/project/bash8/0.0.0
- https://pypi.org/project/bash8/1.0.0
- https://github.com/advisories/GHSA-c22j-84pc-wqhh

Compromised versions (1)

= 0.0.0

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