aioutil3

GHSA-7879-7p7j-q5rp

Malicious code in aioutil3 (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 3.9.1`

## Source: kam193 (cb06e8bed4bc80c83b203abcee07556086a0c41f2b52d72d4a3b3740ddfa95d0)
This is a malicious clone of legitimate python-utils. The modified code introduces a function that silently exfiltrates given data to a hardcoded location. What is interesting, during the analysis the remote domain did not exist and the malicious code was not called in the package, suggesting preparation for the further attack.


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


Campaign: 2026-03-aioutil3


Reasons (based on the campaign):


 - clones-real-package


 - 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/aioutil3/MAL-2026-1289.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/aioutil3
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/aioutil3/MAL-2026-1289.json
- https://github.com/advisories/GHSA-7879-7p7j-q5rp

Compromised versions (1)

= 3.9.1

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