CVE-2026-5190: Aws Aws-C-Event-Stream

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Aws Aws-C-Event-Stream

Published 2026-03-31. Last modified 2026-07-24.