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Malicious package

mflux-streamlitPyPI

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

MAL-2026-5301
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall mflux-streamlit

What this malware does

Versions 0.0.3, 0.0.4 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
0.0.30.0.4

Indicators of compromise (SHA-256)

27ef4c7f33e59dbe037d4b212286dd08cb7b1824c28c0032eb2d91db7a2b0174
78056caffa187ecd62662eefc42d17dd25cb0d010fd6995b2a1857889ebe3b72
24886fb9c3f7248367f9e8709b3ef1245a010d0bed4a35f1b83f0199b2498dba
5da8453add83bdfa35dc65b2be55d7820ae94737974de952b77cfb4fc79d735e

Frequently asked questions

No. mflux-streamlit on PyPI has been identified as a malicious package (versions 0.0.3, 0.0.4 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

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mflux-streamlit (PyPI) malicious package — MAL-2026-5301 | O3 Security