CVE-2026-12043

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://aws.amazon.com/security/security-bulletins/2026-043-aws/
https://github.com/awslabs/aws-c-http/releases/tag/v0.11.0
https://github.com/awslabs/aws-c-http/security/advisories/GHSA-rmjr-3qpm-vh98

Configurations

No configuration.

History

12 Jun 2026, 20:16

Type	Values Removed	Values Added
References		() https://github.com/awslabs/aws-c-http/security/advisories/GHSA-rmjr-3qpm-vh98 -

12 Jun 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-12 19:16

Updated : 2026-06-16 15:42

NVD link : CVE-2026-12043

Mitre link : CVE-2026-12043

CVE.ORG link : CVE-2026-12043

JSON object : View

Products Affected

No product.

CWE

CWE-415

Double Free

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