Vulnerability-Lookup

CVE-2026-49363 (GCVE-0-2026-49363)

Vulnerability from cvelistv5 – Published: 2026-09-10 04:51 – Updated: 2026-09-10 15:55

Title

Apache Artemis, Apache ActiveMQ Artemis: Pre-Authentication Information Disclosure in CORE Protocol Topology Subscription

Summary

An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior to authentication. 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.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-10 15:55 UTC

CWE

CWE-306 - Missing authentication for critical function

Assigner

apache mitre root

References

2 references

URL	Tags
https://lists.apache.org/thread/syjch88zw6pfdoso9…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/09/10/2

Impacted products

2 products

Vendor	Product	Version	CPE status
Apache Software Foundation	Apache Artemis	Affected: 2.50.0 , ≤ 2.56.0 (semver)	guessed
Apache Software Foundation	Apache ActiveMQ Artemis	Affected: 1.0.0 , ≤ 2.44.0 (semver)	guessed

Credits

Domenico Francesco Bruscino

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-49363

Vulnerability from fkie_nvd - Published: 2026-09-10 05:17 - Updated: 2026-09-10 16:17

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/syjch88zw6pfdoso9vs46m23xkgxjbxo
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/09/10/2

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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GHSA-68P5-G7WF-VRWP

Vulnerability from github – Published: 2026-09-10 06:31 – Updated: 2026-09-10 18:31

Details

An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior to authentication.

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.

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

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  "id": "GHSA-68p5-g7wf-vrwp",
  "modified": "2026-09-10T18:31:39Z",
  "published": "2026-09-10T06:31:44Z",
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}

RHSA-2026:66488

Vulnerability from csaf_redhat - Published: 2026-09-10 16:34 - Updated: 2026-09-14 15:59

Summary

Red Hat Security Advisory: Red Hat AMQ Broker 7.14.1 release and security update

Severity

Important

Scope

67 vulnerabilities in this advisory, including CVE-2026-49363.

CVE-2026-49363

A missing authentication vulnerability was found in Apache ActiveMQ Artemis. The SUBSCRIBE_TOPOLOGY_V2 handler in CoreProtocolManager.LocalChannelHandler.handlePacket() processes topology subscription requests on channel0 with zero authentication -- no call to getSecurityStore(), no credential verification, no subject validation. An unauthenticated attacker can send a single 5-byte packet on the CORE protocol (via :8080 HTTP-upgrade in EAP or :61616 in AMQ Broker) to obtain the broker's nodeID (type-1 UUID embedding MAC address), internal hostname/IP, port numbers, connector configurations, and backup/scale-down group names. In clustered deployments, a persistent ClusterTopologyListener is registered that continuously pushes all topology changes to the unauthenticated client. This contrasts with the federation handler in the same file which was fixed via ARTEMIS-5928 (CVE-2026-27446). The leaked nodeID UUID seed directly enables session-name brute-force for REATTACH_SESSION session hijack.

5.3 (Medium)


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

Fixed: 1 product

https://access.redhat.com/errata/RHSA-2026:66488

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RHSA-2026:66545

Vulnerability from csaf_redhat - Published: 2026-09-10 23:22 - Updated: 2026-09-14 15:59

Summary

Red Hat Security Advisory: Red Hat AMQ Broker 7.13.6 release and security update

Severity

Important

Scope

59 vulnerabilities in this advisory, including CVE-2026-49363.

CVE-2026-49363

5.3 (Medium)


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

Fixed: 1 product

https://access.redhat.com/errata/RHSA-2026:66545

Open the full advisory

WID-SEC-W-2026-3289

Vulnerability from csaf_certbund - Published: 2026-09-09 22:00 - Updated: 2026-09-10 22:00

Summary

Apache ActiveMQ Artemis: Mehrere Schwachstellen

Severity

Hoch

Scope

7 vulnerabilities in this advisory, including CVE-2026-49363.

CVE-2026-49363

Known affected: 2 products

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-49363 (GCVE-0-2026-49363)

FKIE_CVE-2026-49363

GHSA-68P5-G7WF-VRWP

RHSA-2026:66488

RHSA-2026:66545

WID-SEC-W-2026-3289

Tags

Sightings

Nomenclature