Critical

XSS in hello.js

  • Disclosed: 13.01.2021
  • Updated: 11.10.2026 10:22

This affects the package hello.js before 1.18.6. The code get the param oauth_redirect from url and pass it to location.assign without any check and sanitisation. So we can simply pass some XSS payloads into the url param oauth_redirect, such as javascript:alert(1).

Affected software

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PlatformPackageVulnerable versionsFixed in
npm package hellojs < 1.18.6 1.18.6

References

CVSS score 9.9/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H
Weakness (CWE)
CWE-79
Platform
npm
Package
hellojs
Disclosed
13.01.2021
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-7jh9-6cpf-h4m7 - CC BY 4.0

Vulnerability history: hellojs

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
2
First → latest
01.2021 08.2023
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 2

Disclosures per year

  1. 2021: 1
  2. 2022: 0
  3. 2023: 1
  4. 2024: 0
  5. 2025: 0
  6. 2026: 0
  1. Critical · 9.8 CVE-2021-26505 < 1.18.8 1.18.8
  2. XSS in hello.js this entry
    Critical · 9.9 CVE-2020-7741 < 1.18.6 1.18.6

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