CVE Catalog

CVE-2026-16756

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.42%

35th percentile - higher than 35% of all known CVEs

Summary

The default serve() path in Amazon aws-smithy-http-server lacks connection and header-read timeouts and a concurrent-connection cap, allowing remote attackers to cause a denial of service by opening many connections and sending partial requests.

Risk Assessment

An attacker can exhaust server sockets and tasks, causing denial of service for legitimate users.

Recommendation

Update aws-smithy-http-server to version 0.66.5 or later, which includes the fix.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS