---
cve: "CVE-2026-89090"
severity: "HIGH"
cvss: 8.2
epss: "0.3%"
vendor: "aws"
kev: false
exploited: false
published: "2026-09-11 18:17:00"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T06:06:34+02:00"
---

# CVE-2026-89090

> 8.2 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- ef3322b8de760eec7510b2e3966077f54584d010 (Commit)

## Referenzen

- <https://github.com/aws/aws-sdk-go-v2/security/advisories/GHSA-xmrv-pmrh-hhx2>
- <https://github.com/aws/aws-sdk-go-v2/releases/tag/release-2026-03-23>
- <https://aws.amazon.com/security/security-bulletins/2026-110-aws/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-89090) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_