Caddy has an RFC 7230 §6.1 compliance issue / Hop-by-hop headers that leak through

影響: go:github.com/caddyserver/caddy/v2 <= 2.11.4 → 2.11.5

AI Disclosure This vulnerability was discovered via deepseek-v4-pro[1m] for finding potential vulnerabilities / inconsistencies in the code base. I made the AI check if Caddy is compliant with various RFCs, incl. 7230. I also used it to help write the PoC, since it was honestly much faster than writing it by hand. I also let it write parts of this advisory text for brevity's sake, but had to rewrite half of it by hand. Summary Caddy's reverse proxy fails to strip RFC 7230 hop-by-hop headers fro…

Read on GitHub Advisory Database

On 10/29/2026, 04:49 AM, GitHub Advisory Database published "Caddy has an RFC 7230 §6.1 compliance issue / Hop-by-hop headers that leak through" (type: Advisory). Severity is "Low" (low). Related technologies: Go, GitHub. CVE: CVE-2026-55458.