Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://aws.amazon.com/security/security-bulletins/2026-011-aws/
- https://github.com/awslabs/aws-c-event-stream/releases/tag/v0.6.0
- https://github.com/awslabs/aws-c-event-stream/security/advisories/GHSA-xvjw-fjq5
FAQ
What is CVE-2026-5190?
CVE-2026-5190 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2026-5190?
CVE-2026-5190 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-5190?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.