Description

Monkeytype is a minimalistic and customizable typing test. In 25.49.0 and earlier, there is improper handling of user input which allows an attacker to execute malicious javascript on anyone viewing a malicious quote submission. quote.text and quote.source are user input, and they're inserted straight into the DOM. If they contain HTML tags, they will be rendered (after some escaping using quotes and textarea tags).

INFO

Published Date :

2025-12-04T22:34:10.010Z

Last Modified :

2025-12-05T14:59:45.465Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2025-66563 vulnerability.

Vendors Products
Monkeytype
  • Monkeytype
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-66563.

URL Resource
https://github.com/monkeytypegame/monkeytype/commit/d6d062a77132ba7d6ba3b482d46ae329d3b8d695 cve-icon cve-icon
https://github.com/monkeytypegame/monkeytype/security/advisories/GHSA-mfjh-9552-8g27 cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact