---
id: "MAL-2026-17862"
kind: "package"
aliases: ["MAL-2026-17862"]
title: "Malicious code in fontcase (PyPI)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "fontcase", "fixed": [], "affected": "= 0.1.0; = 0.1.1; = 0.1.2", "ecosystem": "pypi"}]
ecosystems: ["pypi"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-10-13T19:30:53+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-2026-17862", "first_seen_at": "2026-10-26T20:51:59+00:00"}]
---

# Malicious code in fontcase (PyPI)

## Affected

- pypi:fontcase affected = 0.1.0; = 0.1.1; = 0.1.2 fixed ?

## Timeline

- 2026-10-26T20:51:59+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-17862

## From the sources

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

## Source: kam193 (9e2c4992e5295f2b094f3c7c2b2e6c2dbc8d0d9ca6242d58318e6e1b83a4255c)
During import, the package downloads and executes an infostealer.


---

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


Campaign: 2026-10-fontcase


Reasons (based on the campaign):


 - infostealer


 - Downloads and executes a remote executable.


 - uses-telegram-bot


 - exfiltration-browser-data


 - exfiltration-credentials

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