defaults-deep node module before 0.2.4 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability, which allows a malicious user to modify the prototype of "Object" via __proto__, causing the addition or modification of an existing property that will exist on all objects.
CVSS Vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDefaults Deep Project Defaults Deep
APPDefaults-Deep Project< 0.2.4
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CHECK WITH VENDOR
No clear patch data available. Check vendor references.