aiogram-msgeffect

GHSA-cchj-w2pp-x4mw

Malicious code in aiogram-msgeffect (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 1.2.1`

## Source: kam193 (edd5a99e6d1cebb47e713991f08b50dee4b5bf93ae487f6adc446318ccdba6e7)
Importing the module starts obfuscated code which then look for data related to some Telegram clients and attempt to exfiltrate them


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


Campaign: 2025-11-tgeffect


Reasons (based on the campaign):


 - obfuscation


 - target:telegram


 - exfiltration-credentials

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/aiogram-msgeffect/MAL-2025-191674.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/aiogram-msgeffect
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/aiogram-msgeffect/MAL-2025-191674.json
- https://github.com/advisories/GHSA-cchj-w2pp-x4mw

Compromised versions (1)

= 1.2.1

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