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Malicious code in yzip (PyPI)

Malware Published Jul 21, 2026 to the GitHub Advisory Database • Updated Jul 21, 2026

Package

pip yzip (pip)

Affected versions

= 0.1.0

Patched versions

None

Description

Source: kam193 (81477965a8a70d1ffef0d388478d3e05ef2eea54ade0a9c00ef923deb41b00cf)

During initialization of the archive-support class, the package starts code from another file and downloads multi-stage malware

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

Credit: OpenSSF (source)

References

Published to the GitHub Advisory Database Jul 21, 2026
Reviewed Jul 21, 2026
Last updated Jul 21, 2026

EPSS score

Weaknesses

Embedded Malicious Code

The product contains code that appears to be malicious in nature. Learn more on MITRE.

GHSA ID

GHSA-qw6w-66xx-g6w9

Source code

No known source code
Improvements are not currently accepted on this advisory because this package is malware and has no patched versions. If there is something to change, please open an issue at https://github.com/github/advisory-database/issues.