Unrated severityNVD Advisory· Published Dec 4, 2025· Updated Dec 5, 2025
Monkeytype vulnerable to stored XSS in approve quotes page
CVE-2025-66563
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).
Affected products
2- Range: <=25.49.0
- monkeytypegame/monkeytypev5Range: <= 25.49.0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- github.com/monkeytypegame/monkeytype/commit/d6d062a77132ba7d6ba3b482d46ae329d3b8d695mitrex_refsource_MISC
- github.com/monkeytypegame/monkeytype/security/advisories/GHSA-mfjh-9552-8g27mitrex_refsource_CONFIRM
News mentions
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