yzip

GHSA-qw6w-66xx-g6w9

Malicious code in yzip (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.1.0`

## Source: kam193 (81477965a8a70d1ffef0d388478d3e05ef2eea54ade0a9c00ef923deb41b00cf)
During initialization of the archive-support class, the package starts code from another file and downloads multi-stage malware


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


Campaign: 2025-11-uzip


Reasons (based on the campaign):


 - Downloads and executes a remote executable.


 - obfuscation


 - malware

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/yzip/MAL-2025-192468.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/yzip
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/yzip/MAL-2025-192468.json
- https://www.getsafety.com/blog-posts/extrazip-malware-campaign
- https://www.virustotal.com/gui/file-analysis/MGEwNWE0MzhlMTU3NTUxZTU1OGI4NTRkYTA2MWMxM2M6MTc2MzgzMDEyNA==
- https://www.virustotal.com/gui/file/8808a0a09c0180afe742f0265f8b42bf671bc2083dcecd47c1515f52554200d9/detection
- https://github.com/advisories/GHSA-qw6w-66xx-g6w9

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.