Cloudflare Workers Spectre Attack Leaks JWT From Co-Located Worker… | HappeningNow.news
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Cloudflare Workers Spectre Attack Leaks JWT From Co-Located Worker at 12 Bits/Second

Researchers leak a JWT from a co-located Cloudflare Worker via Spectre at up to 12 bits per second; Cloudflare says the attack is mitigated.

Source AI Summary Published August 19, 2026 Brief Under 1 min brief
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Coverage Single outlet Single-outlet story
Views 162 Community interest
Brief read Under 1 min brief 57 words

AI Summary

Researchers have detailed a remote Spectre attack targeting Cloudflare Workers that can exfiltrate a JSON Web Token from a co‑located worker in production at rates up to 12 bits per second, roughly 360 times faster than a similar 2021 demonstration. The attack exploits side‑channel leakage to read the JWT, highlighting a significant vulnerability in the serverless environment.

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