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CVE-2021-26505

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Date: August 10, 2023

Prototype pollution vulnerability in MrSwitch hello.js version 1.18.6, allows remote attackers to execute arbitrary code via hello.utils.extend function.

Language: JS

Severity Score

Related Resources (5)

https://github.com/MrSwitch/hello.js/issues/634
https://github.com/MrSwitch/hello.js
https://nvd.nist.gov/vuln/detail/CVE-2021-26505
https://github.com/MrSwitch/hello.js/commit/7ab50aeff2d41991f08d4ad6c0481125eea8f6b7
https://www.mend.io/vulnerability-database/CVE-2021-26505

Severity Score

Weakness Type (CWE)

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

CWE-1321

Top Fix

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Upgrade Version

Upgrade to version hellojs - 1.18.8;hellojs - 1.18.8

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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

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