Vulnerability DatabaseWS-2019-0127
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WS-2019-0127
Published:May 14, 2026
Updated:May 14, 2026
lutils-merge has a Prototype Pollution in all versions. The merge() function fails to prevent user input to alter an Object's prototype, allowing attackers to modify override properties of all objects in the application.
Affected Packages
lutils-merge (NPM):
Affected version(s) >=0.1.0 <=0.2.6
Fix Suggestion:
Update to version no_fix
Related Resources (2)
https://github.com/nfour/lutils-merge/issues/1
https://hackerone.com/reports/439107
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CVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
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:
7.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW