CVE-2023-5654 (published 2023-10-19T14:28:23.769Z)
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 products: Vendor: Meta
Product: React Developer Tools Extension
Versions: < 4.28.4