How severe is CVE-2025-59838?

CVE-2025-59838 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-59838 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-59838?

CVE-2025-59838 affects Monkeytype. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-59838?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-59838 have an EU (EUVD) identifier?

Yes. CVE-2025-59838 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31098.

When was CVE-2025-59838 published?

CVE-2025-59838 was published on 2025-09-25 and last updated on 2026-06-17.

CVE-2025-59838

CVE-2025-59838 is a medium-severity vulnerability in Monkeytype with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 2.4
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-31098
Weakness: CWE-79
Affected product: Monkeytype
Published: 2025-09-25
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2025-59838?: CVE-2025-59838 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-59838 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-59838?: CVE-2025-59838 affects Monkeytype. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-59838?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-59838 have an EU (EUVD) identifier?: Yes. CVE-2025-59838 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31098.
When was CVE-2025-59838 published?: CVE-2025-59838 was published on 2025-09-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:monkeytype:monkeytype:*:*:*:*:*:*:*:*

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