CVE-2018-3721

6.5
MEDIUMCVSS v3.1 Base Score
2.38%
LOW RiskEPSS (83rd percentile)

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.

Published: 6/7/2018
Modified: 6/17/2026
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Vulnerability Summary

CVSS v3 Score

6.5MEDIUM

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

CVSS v2 Score

4

AV:N/AC:L/Au:S/C:N/I:P/A:N

EPSS Score (Exploitation Probability)

2.38%LOW Exploitation Risk
83rd percentile

This vulnerability has a 2.38% probability of being exploited in the next 30 days, ranking higher than 83% of all scored CVEs.

CWE Classification

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