VULNERABILITY INTELLIGENCE

CVE-2018-3721

CVSS score6.5 MEDIUM
EPSS probability2.35%
CISA KEVNot currently listed
Published2018-06-07
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Description

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.

Weakness classification

  • CWE-471: Modification of Assumed-Immutable Data (MAID)
  • CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Primary references