CVE-2026-16756 (GCVE-0-2026-16756)

Vulnerability from cvelistv5 – Published: 2026-07-23 18:32 – Updated: 2026-08-12 19:03
VLAI
Title
Allocation of resources without limits in the default aws-smithy-http-server serve() path allows unauthenticated Slowloris denial of service
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 19:03 UTC
CWE
  • CWE-770 - Allocation of resources without limits or throttling
Assigner
AMZN CNA under the mitre root
CNA scorecard A 94/100 over 154 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
AWS aws-smithy-http-server Affected: 0 , ≤ 0.66.4 (custom)
    cpe:2.3:a:aws:aws-smithy-http-server:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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