Kevin George Leo

1 exploit Active since Feb 2026
CVE-2026-26021 WRITEUP CRITICAL WRITEUP
set-in 2.0.1-2.0.4 - Prototype Pollution via Array.prototype
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.
CVSS 9.8