---
id: CVE-2026-49364
title: >-
  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 Act…
summary: >-
  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 Act…
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-306
vendor: apache
product: artemis
affected:
  - 'artemis >= 1.0.0, < 2.44.0'
  - 'artemis >= 2.50.0, < 2.57.0'
patched:
  - artemis 2.57.0
published: '2026-09-10'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T01:10:31.487'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-49364'
references:
  - url: 'https://lists.apache.org/thread/4qbgcz3k38q30bfbf7hphtomrdc8l8n8'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/09/10/3'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49364.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-49364'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2478013'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-49364'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-49364'
  - url: 'https://access.redhat.com/errata/RHSA-2026:66545'
  - url: 'https://access.redhat.com/errata/RHSA-2026:66488'
  - url: 'https://access.redhat.com/errata/RHSA-2026:67604'
  - url: 'https://access.redhat.com/errata/RHSA-2026:70230'
  - url: 'https://access.redhat.com/errata/RHSA-2026:70228'
  - url: 'https://access.redhat.com/errata/RHSA-2026:70229'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00566
epssPercentile: 0.44621
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-09-10T15:54:10.664215Z'
ingestedAt: '2026-09-11T14:42:19.872Z'
scores:
  nvd: 9.1
  vendor: 8
---

## Overview

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.

## Affected

- `artemis >= 1.0.0, < 2.44.0`
- `artemis >= 2.50.0, < 2.57.0`

## Remediation

Upgrade past the affected range:

- `artemis 2.57.0`

## Vendor advisories

- **RHSA-2026:66545** · Red Hat · fixed in: Red Hat AMQ Broker 7.13.6 · released 2026-09-10 · [advisory](https://access.redhat.com/errata/RHSA-2026:66545)
- **RHSA-2026:66488** · Red Hat · fixed in: Red Hat AMQ Broker 7.14.1 · released 2026-09-10 · [advisory](https://access.redhat.com/errata/RHSA-2026:66488)
- **Red Hat VEX** · Important · affected: Red Hat JBoss Enterprise Application Platform 8 · no fix planned: Red Hat JBoss Enterprise Application Platform 8 · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49364.json)
- **RHSA-2026:67604** · Red Hat · fixed in: Red Hat JBoss EAP 7.4 ELS for RHEL 7 Server, Red Hat JBoss EAP 7.4 ELS for RHEL 8, Red Hat JBoss EAP 7.4 ELS for RHEL 9 · released 2026-09-15 · [advisory](https://access.redhat.com/errata/RHSA-2026:67604)
- **RHSA-2026:70230** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 10 · released 2026-09-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:70230)
- **RHSA-2026:70228** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 8 · released 2026-09-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:70228)
- **RHSA-2026:70229** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 9 · released 2026-09-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:70229)