PT-2026-64146 · Aws · Aws-Smithy-Http-Server

CVE-2026-16756 · Published 2026-07-23 · Updated 2026-07-23

Mitre

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Fix

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2026-16756

Affected Products

Aws-Smithy-Http-Server

References · 4

• https://crates.io/crates/aws-smithy-http-server/0.66.5 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-16756 · Security Note
• https://aws.amazon.com/security/security-bulletins/2026-064-aws · Vendor Advisory
• https://github.com/smithy-lang/smithy-rs/security/advisories/GHSA-jvxp-qmx7-gjpx · Note