CVE-2026-5190

HIGH7.7

AWS C Event Stream Streaming Decoder Stack Buffer Overflow

Published Mar 31, 2026

Modified 4 weeks ago

Details

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.

References

ADVISORY

https://aws.amazon.com/security/security-bulletins/2026-011-aws/

FIX

https://github.com/awslabs/aws-c-event-stream/releases/tag/v0.6.0

ADVISORY

https://github.com/awslabs/aws-c-event-stream/security/advisories/GHSA-xvjw-fjq5-68hf

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-5190

CVSS Analysis

CVSS v4.0