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Malicious code in yamlformatter-utils (PyPI)

Malware Published Aug 28, 2026 to the GitHub Advisory Database • Updated Aug 28, 2026

Package

pip yamlformatter-utils (pip)

Affected versions

= 1.0.0

Patched versions

None

Description

Source: kam193 (ef2cbf7d7c360d11860ea9383a1ed84b491e75361f994359fd97284a5d25cdc2)

During import, the package collects sensitive information and exfiltrates it using DNS queries.

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

Campaign: 2026-08-ekx-report-utils

Reasons (based on the campaign):

  • targetted-attack

  • exfiltration-generic

  • exfiltration-credentials

Credit: OpenSSF (source)

References

Published to the GitHub Advisory Database Aug 28, 2026
Reviewed Aug 28, 2026
Last updated Aug 28, 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-rccj-4982-7jfw

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.