libavcodec-extra

GHSA-765j-347h-g9h4

Malicious code in libavcodec-extra (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 99.99.9`

## Source: kam193 (00a68b4208fb4614b815e8a867c2155a8667b424e6457e3b72da362edbad9615)
During installation or import, the package exfiltrates basic information in a dependency confusion attempt. The user identifies themselves as a HackerOne user abusing the PyPI for the purpose of a bug bounty program.


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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-hackerone-bugbounty


Reasons (based on the campaign):


 - dependency-confusion


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

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/libavcodec-extra/MAL-2026-1933.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/libavcodec-extra
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/libavcodec-extra/MAL-2026-1933.json
- https://github.com/advisories/GHSA-765j-347h-g9h4

Compromised versions (1)

= 99.99.9

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