HTTP/1.1 must die: the desync endgame
portswigger.net | research | #http-desync | #request-smuggling | #cloudflare | #research | #netlify | #akamai | #cdn-security
Summary
HTTP/1.1 desync attacks can mass-compromise credentials via flaws in Akamai, Cloudflare and Netlify. A parser-discrepancy toolkit earned $200,000 in two weeks — Kettle argues HTTP/1.1 must die.
- Published
- Collected
--- id: 5040 title: "HTTP/1.1 must die: the desync endgame" source_domain: portswigger.net source_url: "https://portswigger.net/research/http1-must-die" published_at: "2025-10-17 10:13" tags: ["http-desync", "request-smuggling", "cloudflare", "research", "netlify", "akamai", "cdn-security"] phying_url: "https://phying.com/item/5040" lang: en --- # HTTP/1.1 must die: the desync endgame ## Summary HTTP/1.1 desync attacks can mass-compromise credentials via flaws in Akamai, Cloudflare and Netlify. A parser-discrepancy toolkit earned $200,000 in two weeks — Kettle argues HTTP/1.1 must die. ## Intelligence Metadata - **Sources:** portswigger.net - **Published:** 2025-10-17 10:13 - **Original:** https://portswigger.net/research/http1-must-die - **Phying News:** https://phying.com/item/5040