---
id: "MAL-2026-18406"
kind: "package"
aliases: ["MAL-2026-18406"]
title: "Malicious code in stdid-nyxprobe (PyPI)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "stdid-nyxprobe", "fixed": [], "affected": "= 0.0.1; = 0.0.2", "ecosystem": "pypi"}]
ecosystems: ["pypi"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-10-30T10:03:06+00:00"
first_seen_at: "2026-10-30T11:28:44+00:00"
updated_at: "2026-10-30T13:59:24+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-18406", "first_seen_at": "2026-10-30T11:28:44+00:00"}]
---

# Malicious code in stdid-nyxprobe (PyPI)

## Affected

- pypi:stdid-nyxprobe affected = 0.0.1; = 0.0.2 fixed ?

## Timeline

- 2026-10-30T11:28:44+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-18406

## From the sources

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_-= Per source details. Do not edit below this line.=-_

## Source: amazon-inspector (2ccf3f03f309715ca11fb3863aa89a57d4c0550606cb17839bfff9b5dfd34687)
The package installs stdid_nyxprobe.pth into site-packages, whose sole content is `import stdid_nyxprobe._beacon`. Python's site.py mechanism evaluates this on every interpreter start after `pip install`, with no user-initiated import required. The imported module stdid_nyxprobe/_beacon.py collects host identifiers — hostname (socket.gethostname), LAN IP (via `hostname -I`), username (getpass.getuser), current working directory, and Python version — and POSTs them to https://api.telegram.org/bot<token>/sendMessage using a hardcoded bot token (8984095380:AAHN...) and two hardcoded chat IDs (1841775463, -5380294525). A sentinel file at ~/.cache/.stdid_beacon_fired is written to suppress repeat beacons. The package has no documented legitimate functionality that would justify this behavior; the.pth auto-exec primitive is being used purely as a persistence/auto-trigger vector for the exfiltration payload.

## Source: kam193 (0178d6c7a642f90327546548a88f64bd17da5aa97e519249f515c0e6232c73f1)
Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.


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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.

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