CVE-2026-5190

EUVD-2026-17575
Out-of-bounds write in the streaming decoder component in aws-c-event-stream before 0.6.0 might allow a third party operating a server to cause memory corruption leading to arbitrary code execution on a client application that processes crafted event-stream messages.



To remediate this issue, users should upgrade to version 0.6.0 or later.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 36.98%
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Amazon Linux Releases
Amazon Package
Release
python-awscrt-debugsource
Amazon Linux 2023
0:0.36.4-1.amzn2023.0.2
fixed
python3-awscrt
Amazon Linux 2023
0:0.36.4-1.amzn2023.0.2
fixed
python3-awscrt-debuginfo
Amazon Linux 2023
0:0.36.4-1.amzn2023.0.2
fixed