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CVE-2025-59838— Monkeytype Vulnerable to Self-XSS on loading saved custom text

Quick assessment

Affected
monkeytypegame monkeytype
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Monkeytype是Monkeytype开源的一种简约且可定制的打字测试。 Monkeytype 25.36.0及之前版本存在安全漏洞，该漏洞源于加载保存的自定义文本时对用户输入处理不当，可能导致跨站脚本攻击。

CVSS 2.4 · Low EPSS 0.24% · P14

Affected Version Matrix 1

VendorProduct Version RangeStatus
monkeytypegame monkeytype < 25.44.0 affected
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I. Basic Information for CVE-2025-59838

Vulnerability Information
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Vulnerability Title
Monkeytype Vulnerable to Self-XSS on loading saved custom text
Source: CVE Program / CVE List V5
Vulnerability Description
Monkeytype is a minimalistic and customizable typing test. In versions 25.36.0 and prior, improper handling of user input when loading a saved custom text results in XSS. This issue has been fixed in version 25.44.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Monkeytype 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Monkeytype是Monkeytype开源的一种简约且可定制的打字测试。 Monkeytype 25.36.0及之前版本存在安全漏洞，该漏洞源于加载保存的自定义文本时对用户输入处理不当，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
monkeytypegame monkeytype < 25.44.0 -

II. Public POCs for CVE-2025-59838

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III. Intelligence Information for CVE-2025-59838

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Patches & Fixes for CVE-2025-59838 (1)

Vendor Advisories for CVE-2025-59838 (1)

Vendor Pages for CVE-2025-59838 (1)

IV. Related Vulnerabilities

Same product: monkeytype
Same vendor: monkeytypegame
Same weakness: CWE-79

V. Comments for CVE-2025-59838

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