cvedb.io
CVE-2026-25521
HIGH · CVSS 8.8
EPSS exploitation probability: 0%
Published 2026-02-04T22:15:59.203 · Last modified 2026-06-27T05:16:43.140

Summary

Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. In versions from 2.0.12 to before 2.0.39, a prototype pollution vulnerability exists in locutus. Despite a previous fix that attempted to mitigate prototype pollution by checking whether user input contained a forbidden key, it is still possible to pollute Object.prototype via a crafted input using String.prototype. This issue has been patched in version 2.0.39.

Affected products

locutus — locutus

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.