# CVE-2026-49362: Apache Artemis unauthenticated queue creation via CORE protocol

Source: https://junglewise.ai/threats/cve-2026-49362-apache-artemis-unauthenticated-queue-creation-via-core-protocol  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-10. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-49362 · Severity: high · CVSS 7.5 · Published 2026-09-10

Apache Artemis is a message broker that handles critical business communications and data routing. An unauthenticated attacker can remotely create arbitrary durable queues through the CORE protocol, allowing them to manipulate broker state and cause denial of service without requiring any credentials or authentication.

Technologies: [Apache Activemq Artemis](https://junglewise.ai/threats/technologies/activemq-artemis), [Apache Artemis](https://junglewise.ai/threats/technologies/artemis). Vendors: [Apache](https://junglewise.ai/threats/vendors/apache).

## Quick answers

**Is CVE-2026-49362 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-49362 being exploited in the wild.

**How severe is CVE-2026-49362?** High severity, with a CVSS score of 7.5, published 10 September 2026.

**Which products and versions are affected?** Apache Activemq Artemis 1.0.0 through 2.44.0; Apache Artemis 2.50.0 through 2.56.0.

**Is there a fix for CVE-2026-49362?** A patch was published on 2026-09-10: Fix available in version 2.57.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-49362 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-49362?** Check whether you run Apache Activemq Artemis or Apache Artemis at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This vulnerability is an authentication bypass in the CORE protocol handler of Apache Artemis. An unauthenticated remote attacker can invoke queue creation operations that should require authentication, allowing arbitrary durable queue creation and broker state manipulation. The attack is remotely exploitable over the network with no authentication required. Successful exploitation enables denial of service through resource exhaustion or broker misconfiguration. The issue affects Artemis versions 2.50.0–2.56.0 and ActiveMQ Artemis 1.0.0–2.44.0; a fix is available in version 2.57.0.

## Affected products

- Apache Artemis 2.50.0 through 2.56.0
- Apache ActiveMQ Artemis 1.0.0 through 2.44.0

## Timeline

- 2026-09-10: disclosed
- 2026-09-10: patched: Fix available in version 2.57.0

## References

- [https://repo.maven.apache.org/maven2](https://repo.maven.apache.org/maven2)
- [https://lists.apache.org/thread/3828w4tm5mfpflmoprb5oxfgwhq3xw0v](https://lists.apache.org/thread/3828w4tm5mfpflmoprb5oxfgwhq3xw0v)

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