---
id: "MAL-2026-375"
kind: "package"
aliases: ["MAL-2026-375"]
title: "Malicious code in spellcheckerpy (PyPI)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "spellcheckerpy", "fixed": [], "affected": "= 1.0.0; = 1.1.0; = 1.3.0", "ecosystem": "pypi"}]
ecosystems: ["pypi"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-01-20T19:06:25+00:00"
first_seen_at: "2026-10-30T10:28:29+00:00"
updated_at: "2026-10-30T10:28:57+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-375", "first_seen_at": "2026-10-30T10:28:29+00:00"}]
---

# Malicious code in spellcheckerpy (PyPI)

## Affected

- pypi:spellcheckerpy affected = 1.0.0; = 1.1.0; = 1.3.0 fixed ?

## Timeline

- 2026-10-30T10:28:29+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-375

## From the sources

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

## Source: kam193 (79cc4c6495567fe7659e9e4bb5964727bf95cfc9f78d32209937d73457bd476b)
Packages contain hidden code that is effectively run during importing or using the library, and downloads second stage code. Then, a process running in background periodically connects to a remote host and waits for the next code to execute.

The malicious code was in version 1.3.0, but the package itself was clearly uploaded with malclious intentions.


---

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.

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