CVE-2026-89090
An unrecovered panic in the event stream header decoder in Amazon AWS SDK for Go v2 before release-2026-03-23 might allow an unauthenticated remote actor to terminate the consuming application process via a crafted event stream response frame containing a header value type outside the valid range. To remediate this issue, users should upgrade to release-2026-03-23 or later, and patch any forked or derivative code.
Published:Sep 11, 2026
Last Modified:Sep 13, 2026
EPS:Sep 11, 2026
EPSS Score:0.00309
CVSS Score:5.9
Affected Products
Vendor
Product
Action
Vendor
Aws
Product
Aws Sdk For Go V2
Aws
Aws Sdk For Go V2
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
No CAPEC recorded yet
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
