CVE-2020-7741

Cross-site Scripting (XSS)

CRITICAL
9.9
CVSS Score
Published: October 6, 2020 at 02:30 PM UTC
Updated: June 17, 2026 at 03:25 AM UTC
1 product affected across 1 vendorHello.js

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Severity
CRITICAL9.9
Exploit prediction
EPSS 1%

Description

This affects the package hellojs 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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.18.6
Affected range stops below 1.18.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

9.9CRITICALsnyk
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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