Vulnerability DatabaseWS-2019-0181
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WS-2019-0181
Published:May 14, 2026
Updated:May 14, 2026
Versions of lodash.defaultsdeep before 4.6.1 are vulnerable to Prototype Pollution. The function 'defaultsDeep' may allow 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.
Affected Packages
lodash.defaultsdeep (NPM):
Affected version(s) >=3.10.0 <4.6.1
Fix Suggestion:
Update to version 4.6.1
Related Resources (1)
https://github.com/lodash/lodash/compare/4.6.0...4.6.1
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW