CVE-2026-12043

Published: Jun 12, 2026Modified: Jun 12, 2026

8.7

Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5 (Secondary)

Description

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.

Related CWEs

CWE-415

Double Free

The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.

References (3)

https://aws.amazon.com/security/security-bulletins/2026-043-aws/

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

https://github.com/awslabs/aws-c-http/releases/tag/v0.11.0

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

https://github.com/awslabs/aws-c-http/security/advisories/GHSA-rmjr-3qpm-vh98

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

Timeline

No history available yet.