CVE-2026-5190
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.
- Published Mar 31, 2026
- CVSS 7.7 high
- 0.5% chance of exploitation in the next 30 days (EPSS)
- A fix is available
Affected software
In the news
- CVE-2026-5190 - AWS C Event Stream Streaming Decoder Stack Buffer Overflow AWS Security Bulletins ·