ethaddrlib

GHSA-g9h2-5hwg-p99j

Malicious code in ethaddrlib (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.1.0`

## Source: kam193 (9dc2b3682a4269e98a57e232f473846d94e0c74209349b54e1ccc5c669110c47)
Package claims to validate mnemonic, a sensitive part of cryptocurrency system. The responsible functions, however, send given data to a remote service, and not even process the response. Thus, the only functionality is exfiltrating sensitive data.


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


Campaign: 2025-10-ethaddrlib


Reasons (based on the campaign):


 - crypto-related


 - exfiltration-crypto

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/ethaddrlib/MAL-2025-191624.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/ethaddrlib
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/ethaddrlib/MAL-2025-191624.json
- https://github.com/advisories/GHSA-g9h2-5hwg-p99j

Compromised versions (1)

= 0.1.0

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