CVE-2021-26505
CRITICALhello.js 1.18.6 - Prototype Pollution via hello.utils.extend
Title source: llmDescription
Prototype pollution vulnerability in MrSwitch hello.js version 1.18.6, allows remote attackers to execute arbitrary code via hello.utils.extend function.
References (1)
Core 1
Core References
Issue Tracking
https://github.com/MrSwitch/hello.js/issues/634
Scores
CVSS v3
9.8
EPSS
0.0167
EPSS Percentile
82.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-1321
Status
published
Products (2)
hello.js_project/hello.js
1.18.6
npm/hellojs
0 - 1.18.8npm
Published
Aug 11, 2023
Tracked Since
Feb 18, 2026