CVE-2026-89090
Denial of service in the event stream header decoder in AWS SDK for Go v2
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-248 |
| Vendor | aws |
| Product | aws sdk for go v2 |
| Published | Sep 11, 2026 |
| Last Updated | Sep 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
AWS / AWS SDK for Go v2
0 < 2026-03-23