---
id: CVE-2025-59838
title: Monkeytype is a minimalistic and customizable typing test
summary: >-
  Monkeytype is a minimalistic and customizable typing test. In versions 25.36.0
  and prior, improper handling of user input when loading a saved custom text
  results in XSS. This issue has been fixed in version 25.44.0.
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: monkeytype
product: monkeytype
affected:
  - monkeytype <= 25.36.0
published: '2025-09-25'
updated: '2026-10-11'
sourceUpdated: '2026-10-11T20:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-59838'
references:
  - url: >-
      https://github.com/monkeytypegame/monkeytype/commit/f025b121cbe437e29de432b4aa72e0de22c755b7
    label: security-advisories@github.com
  - url: 'https://github.com/monkeytypegame/monkeytype/releases/tag/v25.44.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/monkeytypegame/monkeytype/security/advisories/GHSA-j4xx-fww5-774w
    label: security-advisories@github.com
  - url: >-
      https://github.com/monkeytypegame/monkeytype/security/advisories/GHSA-j4xx-fww5-774w
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00231
epssPercentile: 0.12883
ingestedAt: '2026-10-12T14:50:33.994Z'
---

## Overview

Monkeytype is a minimalistic and customizable typing test. In versions 25.36.0 and prior, improper handling of user input when loading a saved custom text results in XSS. This issue has been fixed in version 25.44.0.

## Affected

- `monkeytype <= 25.36.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.