---
id: "MAL-2026-17883"
kind: "package"
aliases: ["MAL-2026-17883"]
title: "Malicious code in py-worm (PyPI)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "py-worm", "fixed": [], "affected": "= 0.1.0; = 2.0.0; = 2.0.1", "ecosystem": "pypi"}]
ecosystems: ["pypi"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-10-15T08:29:24+00:00"
first_seen_at: "2026-10-26T20:51:59+00:00"
updated_at: "2026-10-26T21:06:18+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-17883", "first_seen_at": "2026-10-26T20:51:59+00:00"}]
---

# Malicious code in py-worm (PyPI)

## Affected

- pypi:py-worm affected = 0.1.0; = 2.0.0; = 2.0.1 fixed ?

## Timeline

- 2026-10-26T20:51:59+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-17883

## From the sources

Importing py-worm's `agentaix` module downloads a mutable Python file from `https://raw.githubusercontent.com/anonrider404/pypl/refs/heads/main/readme.txt` to a temporary `.py` file and launches it without a visible console on Windows. Versions 0.1.0 and 2.0.0 do this directly during import; version 2.0.1 starts a daemon thread during import to perform the same action. The package's CLI and GUI entry points import this module. The remote file's Git history contains a Windows remote file management client that registers persistence through an HKCU Run entry, polls `https://googleforum.pythonanywhere.com` for commands, and supports file upload, download, deletion, and command execution. An earlier remote-file revision is byte-identical to the `readme.txt` payload reported in MAL-2026-17752 (`agentaix`); the 39,931-byte `agentaix/gui.py` is also byte-identical across that package and all py-worm releases. The remote file is mutable; its contents at the time of any particular victim import and actual execution on victim systems have not been established.

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

## Source: kam193 (d4c5838f30da7c1f684305ec0704ef37e963793449390f5b13a4e06212ccbd9d)
The package installs a persistent job that allows the attacker for exfiltrating files and executing remote code on the victim's machine.


---

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


Campaign: 2026-10-agentaix


Reasons (based on the campaign):


 - files-exfiltration


 - peristence-autorun


 - The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.


 - rat


 - persistence


 - Downloads and executes a remote malicious script.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_