cvedb.io
CVE-2026-26021
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-02-11T22:15:52.077 · Last modified 2026-06-17T10:25:36.833

Summary

set-in provides the set value of nested associative structure given array of keys. A prototype pollution vulnerability exists in the the npm package set-in (>=2.0.1, < 2.0.5). 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 Array.prototype. This has been fixed in version 2.0.5.

Affected products

set-in_project — set-in

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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.