< Back

CVE-2026-89090

Updated on 11 Sep 2026

Severity

8.2 High severity

Details

CVSS score
8.2
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE ID
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

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.

Details

Affected product:
Grafana , aws/aws-sdk-go-v2/aws/protocol/eventstream , aws/aws-sdk-go-v2/feature/s3/manager , aws/aws-sdk-go-v2/service/s3 , google/go-cloud , grafana/grafana/pkg/storage/unified/apistore , grafana/grafana/pkg/storage/unified/resource
Affected packages:
github.com/aws/aws-sdk-go-v2/service/s3 @ 1.26.3 (+15 more)