buffparser

GHSA-qx7x-46qw-v775

Malicious code in buffparser (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 1.0.0`

## Source: kam193 (5cc891132b1216e9093bcdd4581373dc7f750f700c82347c28bd1dff079261d8)
Described as a utility for gaming, the code starts a reverse shell when using the exposed alledegdly parsing function.


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Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.


Campaign: 2026-04-buffparser


Reasons (based on the campaign):


 - The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.


 - action-hidden-in-lib-usage

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/buffparser/MAL-2026-3203.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/buffparser
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/buffparser/MAL-2026-3203.json
- https://github.com/advisories/GHSA-qx7x-46qw-v775

Compromised versions (1)

= 1.0.0

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