Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') Affecting node-lodash package, versions <4.17.11+dfsg-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
2.38% (83rd percentile)

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  • Snyk IDSNYK-ECHOLATEST-NODELODASH-19698566
  • published12 Sept 2026
  • disclosed7 Jun 2018

Introduced: 7 Jun 2018

CVE-2018-3721  (opens in a new tab)
CWE-1321  (opens in a new tab)

How to fix?

Upgrade Echo:latest node-lodash to version 4.17.11+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream node-lodash package and not the node-lodash package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1