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CVE-2021-26707

Good to know:

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Date: June 2, 2021

The merge-deep library before 3.0.3 for Node.js can be tricked into overwriting properties of Object.prototype or adding new properties to it. These properties are then inherited by every object in the program, thus facilitating prototype-pollution attacks against applications using this library.

Language: JS

Severity Score

Related Resources (8)

https://github.com/jonschlinkert/merge-deep/commit/11e5dd56de8a6aed0b1ed022089dbce6968d82a5
https://security.netapp.com/advisory/ntap-20210716-0008/
https://securitylab.github.com/advisories/GHSL-2020-160-merge-deep/
https://www.npmjs.com/package/merge-deep
https://nvd.nist.gov/vuln/detail/CVE-2021-26707
https://securitylab.github.com/advisories/GHSL-2020-160-merge-deep
https://security.netapp.com/advisory/ntap-20210716-0008
https://www.mend.io/vulnerability-database/CVE-2021-26707

Severity Score

Weakness Type (CWE)

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

CWE-1321

Improperly Controlled Modification of Dynamically-Determined Object Attributes

CWE-915

Top Fix

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Upgrade to version merge-deep - 3.0.3

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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