Which versions of pantheon-toolsets are malicious?

The following PyPI versions of pantheon-toolsets are flagged malicious: 0.5.5, 0.5.6. Treat any of these as compromised.

How do I remediate pantheon-toolsets if I installed it?

Remove pantheon-toolsets from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound network activity or persistence. Use O3 Security's dependency scanner to confirm the package and its artifacts are fully purged across your stack.

Is pantheon-toolsets part of a known attack campaign?

Yes — pantheon-toolsets is associated with the 2026-06-compr-woodpecker campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

Can O3 Security detect pantheon-toolsets in my codebase?

Yes. O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, blocking pantheon-toolsets and packages like it before any post-install script runs.

Malicious package

pantheon-toolsetsPyPI

Malicious code in pantheon-toolsets (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2026-5277

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

pip uninstall pantheon-toolsets

What this malware does

Versions 0.5.5, 0.5.6 were compromised.

Compromised packages start an obfuscated infostealer. The infostealer is a heavily obfuscated JavaScript code executed using Bun runtime on Python startup. It collectes all kinds of sensitive data, including API keys, credentials to package repositories, cryptocurrency assets, password manager data. Infostealer actively queries online services to collect additional secrets as well as attempts to gain persistence and spread further by publishing infected packages using collected credentials. Data are exfiltrated likely using Github. The code seems to threaten to wipe the user's data if it detects invalid GitHub tokens. Cleanup should be done with caution.

It seems to be related to the recent Mini Shai Hulud campaign.

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

Campaign: 2026-06-compr-woodpecker

Reasons (based on the campaign):

compromised-package
exfiltration-env-variables
exfiltration-cloud-tokens
exfiltration-credentials
abuses-pth
obfuscation
infostealer
The package contains code to detect if it is running in a sandbox environment.
exfiltration-crypto
files-exfiltration
destructive-actions

Malicious versions

2 flagged

0.5.50.5.6

Indicators of compromise (SHA-256)

9c9711927907f09a0ef2b146d3aba3b8a06197b9af3f639d579015cdab7c0d5d

da03533f5773391b407c22d0024023d206ae96cea73fcd0d05cb2e0b5559e4dc

d3b47973a9df4b3f64f94ea3d91063d428a7212d369981f036301c5aadc4e2ac

43606844907760e50b0a368f20365dc747287c3a73ce5d4b4426f575d852e059

Frequently asked questions

No. pantheon-toolsets on PyPI has been identified as a malicious package (versions 0.5.5, 0.5.6 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-06-compr-woodpecker

References

Credits

Kamil Mańkowski (kam193) · reporter

Scan your dependencies

O3 Security blocks malicious packages like this at install time and in CI.

Supply-chain protection