Prototype Pollution Affecting merge package, versions <1.2.1


Severity

0.0
low
0
10

    Threat Intelligence

    Exploit Maturity
    Mature
    EPSS
    0.11% (46th percentile)

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  • Snyk ID SNYK-JS-MERGE-72553
  • published 4 Nov 2018
  • disclosed 28 Sep 2018
  • credit asgerf

How to fix?

Upgrade merge to version 1.2.1 or higher.

Overview

merge is used to merge multiple objects into one object.

Affected versions of this package are vulnerable to Prototype Pollution via the merge.recursive function. It can be tricked into adding or modifying properties of the Object prototype. These properties will be present on all objects.

CVSS Scores

version 3.1
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Snyk

2 low
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    High
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    Low
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NVD

7.5 high