codeoptimizer

GHSA-xr94-7c4j-2j88

Malicious code in codeoptimizer (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 4.1.1`

## Source: kam193 (7ae236bbeace8d7b056d4827059bc1f4b6314e57e75827ce5a980ac9dfb991c2)
On importing the module, there is an automated start of a Telegram bot capable of exfiltrating passwords from browsers, executing arbitrary commands and so on. While the description states it's a monitoring tool, the automated start, capabilities targeting secret values suggest malicious intentions.


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


Campaign: 2025-03-yolov8mini


Reasons (based on the campaign):


 - infostealer


 - exfiltration-generic


 - dependency-confusion


 - exfiltration-browser-data


 - The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/codeoptimizer/MAL-2025-3440.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/codeoptimizer
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/codeoptimizer/MAL-2025-3440.json
- https://github.com/advisories/GHSA-xr94-7c4j-2j88

Compromised versions (1)

= 4.1.1

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