---
id: MAL-2025-191533
title: Malicious code in spellcheckers (PyPI)
summary: Malicious code in spellcheckers (PyPI)
severity: critical
exploited: true
vendor: spellcheckers
product: spellcheckers
ecosystem: pip
affected:
  - spellcheckers
published: '2025-11-15'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T09:45:05.186862951Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/MAL-2025-191533'
references:
  - url: 'https://helixguard.ai/blog/malicious-spellcheckers-2025-11-19'
  - url: >-
      https://securityonline.info/pypi-typosquat-delivers-multi-layer-python-rat-bypassing-scanners-with-xor-encryption/
  - url: 'https://helixguard.ai/blog/malicious-spellcheckers-2025-11-19'
  - url: 'https://bad-packages.kam193.eu/pypi/package/spellcheckers'
  - url: >-
      https://www.aikido.dev/blog/malicious-pypi-packages-spellcheckpy-and-spellcheckerpy-deliver-python-rat
tags:
  - osv
  - pip
  - malware
ingestedAt: '2026-10-30T19:05:36.337Z'
---

## Overview


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

## Source: google-open-source-security (c83520810b148ec74e509b16851a1fafa1bec576b502a5debabd9b52520d9754)
This package is malicious and typosquating the legitimate pyspellchecker library.
This package will deploy a remote-access trojan that allows the attacker full
control of the victim's host.

## Source: kam193 (6585d4c29dd97a1e46f30047c7d67a6e4bbb19f9b41bc1f9ff0b5fc34b839c75)
Package contains hidden code that is effectively run during importing and downloads second stage code. Then, a process running in background periodically connects to a remote host and waits for next code to execute


---

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


Campaign: 2025-11-spellcheckers


Reasons (based on the campaign):


 - obfuscation


 - Downloads and executes a remote malicious script.


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


## Affected packages

- `spellcheckers`

## Remediation

Refer to the advisory for the patched release.