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CVE-2026-26021

Prototype pollution in set-in PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
ahdinosaur / set-inaffected >= 2.0.1, < 2.0.5

CWE

CWE-1321

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.