---
cve: "CVE-2026-49364"
severity: "CRITICAL"
cvss: 9.1
epss: "0.4%"
vendor: "Apache Software Foundation"
kev: false
exploited: false
published: "2026-09-10 05:17:01"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T05:37:13+02:00"
---

# CVE-2026-49364

> 9.1 CRITICAL

## Beschreibung

An unauthenticated network-adjacent attacker can leverage discovery to capture cluster administrative credentials during the initial cluster connection handshake.

This issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apache ActiveMQ Artemis: from 1.0.0 through 2.44.0.



Users are recommended to upgrade to version 2.57.0, which fixes the issue.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 437105493d75b6156ba7bb1f77bae93de2182e30 (Commit)
- 20cab945f0944d669a0aac383a7578e2a6fd7346 (Commit)

## Referenzen

- <https://lists.apache.org/thread/4qbgcz3k38q30bfbf7hphtomrdc8l8n8>
- <http://www.openwall.com/lists/oss-security/2026/09/10/3>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-49364) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_