Vulnerabilities CVE-2026-16756

CVE-2026-16756

High

Open

TLP:CLEAR

Allocation of resources without limits in the default aws-smithy-http-server serve() path allows unauthenticated Slowloris denial of service

NVD CVE.org

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Description

Missing connection and header-read timeouts and the absence of a concurrent-connection cap in the default serve() path of Amazon aws-smithy-http-server might allow remote attackers to cause a denial of service by opening many connections and sending partial requests that are never completed, exhausting server sockets and tasks. To mitigate this issue, users should upgrade to aws-smithy-http-server 0.66.5 or later.

Details

CVSS Score: 7.5
EPSS Score ⓘ: 0.42%

34.6th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Confidence: 90%
Published: Jul 23, 2026
Last Modified: Aug 12, 2026

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