CVE-2025-59838: Monkeytype is a minimalistic and customizable typing test

Q: How do I fix CVE-2025-59838?

monkeytype: upgrade to 25.44.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-59838 being exploited?

CVE-2025-59838 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-59838 affect?

CVE-2025-59838 affects monkeytype. Severity is medium (CVSS 5.4). 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.

Q: How urgent is CVE-2025-59838?

Priority 28/100. Public exploit reference

Routine

MEDIUM 5.4UPGRADE

CVE-2025-59838 is a medium-severity flaw (CVSS 5.4) affecting monkeytype. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-09-25
Last modified	2026-10-14

Publisher (CNA): GitHub, Inc. · Vendor: monkeytype

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-09-25 15:16 UTCPublished CVE record published
2026-10-14 20:15 UTCUpdated Record last modified

monkeytype monkeytype UPGRADE

Affected: < 25.44.0

Fixed in: 25.44.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy monkeytype || rpm -q monkeytype || monkeytype --version

2. UPGRADE to 25.44.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade monkeytype

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade monkeytype

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-59838?

monkeytype: upgrade to 25.44.0. Exact commands for each OS are on this page.

Is CVE-2025-59838 being exploited?

CVE-2025-59838 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-59838 affect?

CVE-2025-59838 affects monkeytype. Severity is medium (CVSS 5.4). 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.

How urgent is CVE-2025-59838?

Priority 28/100. Public exploit reference

Related CVEs

CVE-2025-66563 MEDIUM 6.1 UPGRADE Monkeytype is a minimalistic and customizable typing test
CVE-2024-41127 HIGH 8.3 UPGRADE Monkeytype is a minimalistic and customizable typing test

References

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