ninja-core-optimizer

GHSA-rcx4-8wxf-vqv8

Malicious code in ninja-core-optimizer (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 1.3.3`

## Source: kam193 (fbe38f659a9fac5304f648aa594e12123221abd687755378f05b3efe17d6d4c7)
During installation, obfuscated code exfiltrates cryptocurrency wallet data to a hardcoded location


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


Campaign: 2026-05-ninja-core-utils


Reasons (based on the campaign):


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


 - obfuscation


 - crypto-related


 - exfiltration-crypto


 - backdoor

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/ninja-core-optimizer/MAL-2026-3396.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/ninja-core-optimizer
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/ninja-core-optimizer/MAL-2026-3396.json
- https://github.com/advisories/GHSA-rcx4-8wxf-vqv8

Compromised versions (1)

= 1.3.3

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