CVE-2026-12043
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| AWS | aws-c-http | 0.4.22 <= 0.10.15 | affected |
Weaknesses
- CWE-415: CWE-415 Double free
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://github.com/awslabs/aws-c-http/releases/tag/v0.11.0
- https://aws.amazon.com/security/security-bulletins/2026-043-aws/
- https://github.com/awslabs/aws-c-http/security/advisories/GHSA-rmjr-3qpm-vh98
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