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).
History

Fri, 05 Dec 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 05 Dec 2025 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Monkeytype
Monkeytype monkeytype
Vendors & Products Monkeytype
Monkeytype monkeytype

Thu, 04 Dec 2025 22:45:00 +0000

Type Values Removed Values Added
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).
Title Monkeytype vulnerable to stored XSS in approve quotes page
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 7.1, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2025-12-04T22:34:10.010Z

Updated: 2025-12-05T14:59:45.465Z

Reserved: 2025-12-04T16:05:22.975Z

Link: CVE-2025-66563

cve-icon Vulnrichment

Updated: 2025-12-05T14:59:21.771Z

cve-icon NVD

Status : Received

Published: 2025-12-04T23:15:47.270

Modified: 2025-12-05T15:15:51.973

Link: CVE-2025-66563

cve-icon Redhat

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