---
id: "MAL-2026-15860"
kind: "package"
aliases: ["MAL-2026-15860"]
title: "Malicious code in py-0requests (PyPI)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "py-0requests", "fixed": [], "affected": "= 0.0.1", "ecosystem": "pypi"}]
ecosystems: ["pypi"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-09-03T17:01:32+00:00"
first_seen_at: "2026-10-26T20:51:56+00:00"
updated_at: "2026-10-26T21:12:36+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-15860", "first_seen_at": "2026-10-26T20:51:56+00:00"}]
---

# Malicious code in py-0requests (PyPI)

## Affected

- pypi:py-0requests affected = 0.0.1 fixed ?

## Timeline

- 2026-10-26T20:51:56+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-15860

## From the sources

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

## Source: amazon-inspector (bd1f4c6176eadca0e4a460d4434e9957eb9befa90d85feecd49e4baf7f3abb4b)
py-0requests is a homoglyph typosquat of the PyPI package `requests` (letter `o` replaced with digit `0`). On `import py_0requests`, top-level code in the package's `__init__.py` scrapes `os.environ` for keys prefixed with SECRET, API, TOKEN, or KEY and sends the collected dictionary over a TCP socket to a host/port read from `TS_HOST`/`TS_PORT` (defaulting to 127.0.0.1:9999). The same import path spawns a Python subprocess that opens a TCP connection to the same destination, sends a `SHELL` marker, and holds the socket open, providing a reverse-shell handshake to whichever operator controls the destination. The package's CLI banner self-identifies as `targeting requests` and ships no HTTP-client API.

## Source: kam193 (0d447dd088f92d3af66ecad461725f2df268f5f073e22a7293b3f946451933fb)
During import, the code exfiltrates potentially sensitive env variables. In all analyzed versions the exfiltration target was a localhost, suggesting it was just a test.


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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: 2026-09-0requests


Reasons (based on the campaign):


 - exfiltration-env-variables


 - typosquatting

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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_