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OpenAdvisories
Malicious MAL-2026-14590

yamlformatter-utils

PyPI package · versions 1.0.0

Reported Aug 28, 2026 · Updated Aug 28, 2026

If this package is installed

Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.

Details

Source: kam193 (ef2cbf7d7c360d11860ea9383a1ed84b491e75361f994359fd97284a5d25cdc2)
During import, the package collects sensitive information and exfiltrates it using DNS queries.

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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