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1 vulnerability by ahdinosaur

CVE-2026-26021 (GCVE-0-2026-26021)

Vulnerability from cvelistv5 – Published: 2026-02-11 21:18 – Updated: 2026-02-12 21:16
VLAI?
Title
Prototype pollution in set-in
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.
Severity ?
9.4 (Critical)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
Impacted products
Vendor Product Version
ahdinosaur set-in Affected: >= 2.0.1, < 2.0.5
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