CVE-2025-66563 (GCVE-0-2025-66563)
Vulnerability from cvelistv5 – Published: 2025-12-04 22:34 – Updated: 2025-12-05 14:59
VLAI
EPSS
VEX
Title
Monkeytype vulnerable to stored XSS in approve quotes page
Summary
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).
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-05 14:59 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/monkeytypegame/monkeytype/secu… | x_refsource_CONFIRM |
| https://github.com/monkeytypegame/monkeytype/comm… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| monkeytypegame | monkeytype |
Affected:
<= 25.49.0
|
guessed |
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