Threats Tagged 'cve-2026-59900'
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Threats Tagged 'cve-2026-59900'
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Io.netty:netty codec http2: Netty: [codec-http2] Lack of Host Header Deduplication in HTTP/2→HTTP/1.x Translation Leads to Request Routing Bypass (CVE-2026-59900)CVE-2026-59900 0 Netty's HTTP/2-to-HTTP/1.x translation layer does not properly deduplicate or validate Host headers when both the :authority pseudo-header and a literal host header are present in a single HTTP/2 HEADERS frame. This results in an HttpRequest object containing two Host headers with differing attacker-controlled values, potentially allowing request routing bypass. Join the discussion | GCVE Database | 07/22/2026, 21:49:28 UTC Added: 07/22/2026, 23:22:59 UTC |
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