CVE-2025-59838

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.

CVSS 4.0

2.4CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N

CVSS 3.1

5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2025-09-25

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• monkeytype:monkeytype

References

• https://github.com/monkeytypegame/monkeytype/commit/42f6a16c6255d66cbb2be279131454866d98f2c9
• https://github.com/monkeytypegame/monkeytype/commit/f025b121cbe437e29de432b4aa72e0de22c755b7
• https://github.com/monkeytypegame/monkeytype/releases/tag/v25.44.0
• https://github.com/monkeytypegame/monkeytype/security/advisories/GHSA-j4xx-fww5-774w
• https://github.com/monkeytypegame/monkeytype/security/advisories/GHSA-j4xx-fww5-774w

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