py-publish-test-0126PyPI
Advisory published Updated
py-publish-test-0126 is a confirmed malicious PyPI package (MAL-2026-98) that steals credentials and exfiltrates sensitive data (malicious versions 0.1.0, 0.2.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in py-publish-test-0126 (PyPI)
What this malware does
Dependency confusion demonstration package with reporting through a decorator function
Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.
Campaign: 2025-12-sec-lab-it
Reasons (based on the campaign):
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dependency-confusion
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The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.
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typosquatting
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for py-publish-test-0126 (2 malicious versions).
If you installed it — respond
py-publish-test-0126 is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If py-publish-test-0126 was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks py-publish-test-0126-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.