CVE-2025-59838: monkeytypegame monkeytype · Cross-site Scripting
Affects monkeytypegame monkeytypeSource CVE Database V5
Not known to be exploited · CVSS 2.4 Low : upgrade to 25.44.0 when convenient.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 25.44.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade monkeytypegame monkeytype to 25.44.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| monkeytypegamemonkeytype | Affected
| Fixed in
|
AI-suggested
To mitigate CVE-2025-59838, European organizations should immediately update Monkeytype to version 25.44.0 or later, where the vulnerability has been fixed. Additionally, organizations should implement strict controls on the use of saved custom texts, including restricting the ability to import or load such texts from untrusted sources. User education is critical to prevent loading suspicious or unsolicited saved texts. Employing endpoint security solutions that monitor and restrict script execution in browsers can provide an additional layer of defense. Organizations should also review and enforce least privilege principles to limit local access rights, reducing the risk of exploitation. Regularly auditing installed software versions and applying timely patches will help prevent exploitation of similar vulnerabilities. Finally, monitoring user activity for unusual behavior related to Monkeytype usage may help detect attempted exploitation.
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.
References
- github.com/monkeytypegame/monkeytype/security/advisories/GHSA-j4xx-fww5-774w (opens in a new tab)
- github.com/monkeytypegame/monkeytype/commit/f025b121cbe437e29de432b4aa72e0de22c755b7 (opens in a new tab)
- github.com/monkeytypegame/monkeytype/releases/tag/v25.44.0 (opens in a new tab)
- github.com/monkeytypegame/monkeytype/commit/42f6a16c6255d66cbb2be279131454866d98f2c9 (opens in a new tab)