aiohttp-util

GHSA-fm5g-4923-mrm9

Malicious code in aiohttp-util (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.68.253`

## Source: kam193 (b5a826a64a0405306b51cd85239237982278e758bc8109e7da521e15f003ca6e)
During installation, package exfiltrates some basic info to a GitHub issue comment, and then attempt to set up a persistent infostealer focused on exfiltrating crypto wallets and browsers data. Likely continuation of 2026-05-py-requests


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


Campaign: 2025-06-alembic-util


Reasons (based on the campaign):


 - infostealer


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


 - crypto-related


 - Downloads and executes a remote malicious script.


 - exfiltration-browser-data


 - exfiltration-crypto


 - persistence


 - typosquatting

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/aiohttp-util/MAL-2026-3699.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/aiohttp-util
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/aiohttp-util/MAL-2026-3699.json
- https://github.com/advisories/GHSA-fm5g-4923-mrm9

Compromised versions (1)

= 0.68.253

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