Lodash Node Module < 4.17.5: Modification of Assumed-Immutable Data (MAID) Vulnerability via defaultsDeep, merge, and mergeWith Functions

CVE-2018-3721 · MEDIUM Severity

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

lodash node module before 4.17.5 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability via defaultsDeep, merge, and mergeWith functions, 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.

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