Set-in Project vulnerabilities
Published CVEs affecting Set-in Project products: 1 record(s), with severity, exploitation and fixes.
CVE-2026-26021
Critical · 9.8
CWE-1321 Feb 11, 2026
Prototype pollution in set-in
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.