yelp-pkg

GHSA-f6pg-w2v6-3cj7

Malicious code in yelp-pkg (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 1337.0.0`

## Source: kam193 (fdea5ca17bb09234a292159e525a2a38ac3fd43760c6f2184aa27f563f320075)
During import, the package attempts to exfiltrate potentially sensitive data.


---

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


Campaign: GENERIC-questionable-pentest


Reasons (based on the campaign):


 - exfiltration-env-variables


 - exfiltration-generic


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


 - typosquatting

---

Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/yelp-pkg/MAL-2025-191666.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/yelp-pkg
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/yelp-pkg/MAL-2025-191666.json
- https://github.com/advisories/GHSA-f6pg-w2v6-3cj7

Compromised versions (1)

= 1337.0.0

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