7.1
/ 10
HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
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).
Basic Information
ID
CVE-2025-66563
Source
GitHub_M
Published
Dec 4, 2025 at 22:34
Affected Product
Vendor
monkeytypegame
Product
monkeytype
Version
<= 25.49.0
Affected Versions
monkeytypegame monkeytype <= 25.49.0