NetSight
medium6.5

CVE-2023-5654

React Developer Tools extension Improper Authorization vulnerability

Impact

The React Developer Tools extension registers a message listener with window.addEventListener('message', <listener>) in a content script that is accessible to any webpage that is active in the browser. Within the listener is code that requests a URL derived from the received message via fetch(). The URL is not validated or sanitised before it is fetched, thus allowing a malicious web page to arbitrarily fetch URL’s via the victim's browser.

Affected packages

EcosystemPackageAffectedFixed in
npmreact-devtools-core< 4.28.44.28.4

Affected products

VendorProductAffected versions
FacebookReact-Devtools
before 4.28.4

Weakness classification

References