Skip to content
OpenAdvisories
Malicious MAL-2026-4355

mistral-workflows-plugins-webhook

PyPI package · versions 999.0.0

Reported May 26, 2026 · Updated May 26, 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 (e87825efe9006ca3d435869b276f0d8526a1255ec71ac6e7aa0ea1bb068b6673)
Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.

---

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: GENERIC-standard-pypi-install-pentest

Reasons (based on the campaign):

- The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

- The package overrides the install command in setup.py to execute malicious code during installation.

Source: ossf-package-analysis (f1cc2ab2edf3a60cf389b863157610e1ed044ecd04c13654ffae60a9e11e2d3f)
The OpenSSF Package Analysis project identified 'mistral-workflows-plugins-webhook' @ 999.0.0 (pypi) as malicious.

It is considered malicious because:

- The package communicates with a domain associated with malicious activity.