CVE-2026-54737
HIGH
NVD
CVSS Score
7.3
Severity
HIGH
Published
Jul 31, 2026
Vendor
unknown
Description
@phun-ky/defaults-deep is a library like lodash defaultsDeep with array preservation and no lodash dependency. Prior to 2.0.5, defaultsDeep() recursively merges user-supplied objects without filtering proto, constructor, and prototype, allowing properties to be written to Object.prototype. This issue is fixed in version 2.0.5.