Cybersecurity researchers have disclosed details of a remote Spectre attack against Cloudflare Workers that leaked a JSON Web Token (JWT) from a co-located Worker in the production environment at up to 12 bits per second, 360 times the rate of an earlier attack demonstrated in 2021.

The end-to-end experiment used an attacker Worker and a victim Worker controlled by the researchers,



Source: TheHackerNews
Source Link: https://thehackernews.com/2026/08/cloudflare-workers-spectre-attack-leaks.html