PT-2026-48949 · Aws · Aws-C-Http

Published 2026-06-12 · Updated 2026-06-12 · CVE-2026-12043

NVD

CVSS v3.1

8.8

High

Base vector

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

Improper handling of HPACK dynamic table size updates in the AWS Common Runtime aws-c-http library might allow a remote threat actor operating a server to cause memory corruption on a connecting client application, potentially leading to arbitrary code execution, via a crafted sequence of HTTP/2 HEADERS frames.

To remediate this issue, users should upgrade to aws-c-http version 0.11.0.

Fix

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

CVE-2026-12043

Affected Products

Aws-C-Http

References · 4

• https://github.com/awslabs/aws-c-http/releases/tag/v0.11.0 · Patch
• https://aws.amazon.com/security/security-bulletins/2026-043-aws · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-12043 · Security Note
• https://github.com/awslabs/aws-c-http/security/advisories/GHSA-rmjr-3qpm-vh98 · Note