CVE-2026-5190 in AWS aws-c-event-stream
Summary
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.
Responsible
AMZN
Reservation
03/30/2026
Disclosure
03/31/2026
Entries
VulDB provides additional information and datapoints for this CVE:
| ID | Vulnerability | CWE | Exp | Cou | CVE |
|---|---|---|---|---|---|
| 354457 | AWS aws-c-event-stream event-stream Message out-of-bounds write | 787 | Not defined | Official fix | CVE-2026-5190 |