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.
References (3)
Core 3
Core References
Vendor Advisory vendor-advisory
https://aws.amazon.com/security/security-bulletins/2026-043-aws/
Third Party Advisory third-party-advisory
https://github.com/awslabs/aws-c-http/security/advisories/GHSA-rmjr-3qpm-vh98
Scores
CVSS v3
8.8
EPSS
0.0033
EPSS Percentile
24.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-415
Status
published
Products (1)
AWS/aws-c-http
0.4.22 - 0.10.15
Published
Jun 12, 2026
Tracked Since
Jun 13, 2026