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Aws Smithy Http Server

1 CVEs product

Monthly

CVE-2026-16756 Jul 23, 18:32 Cargo HIGH POC PATCH GHSA This Week

Denial of service in Amazon's aws-smithy-http-server Rust crate (versions prior to 0.66.5) lets remote unauthenticated attackers exhaust server sockets and async tasks by opening many connections and trickling partial requests that never complete. The default serve() path ships without connection read/header timeouts or a concurrent-connection cap, so a classic slowloris-style flood can hang the service indefinitely. No public exploit has been identified at time of analysis, though the technique is well-understood and the CVSS 4.0 base score is 8.7 (High).

Denial Of Service AWS Aws Smithy Http Server
NVD GitHub
CVSS 4.0
8.7
EPSS
0.4%
EPSS 0% CVSS 8.7
HIGH POC PATCH This Week

Denial of service in Amazon's aws-smithy-http-server Rust crate (versions prior to 0.66.5) lets remote unauthenticated attackers exhaust server sockets and async tasks by opening many connections and trickling partial requests that never complete. The default serve() path ships without connection read/header timeouts or a concurrent-connection cap, so a classic slowloris-style flood can hang the service indefinitely. No public exploit has been identified at time of analysis, though the technique is well-understood and the CVSS 4.0 base score is 8.7 (High).

Denial Of Service AWS Aws Smithy Http Server
NVD GitHub

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