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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-49363
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-10 05:17:01 UTC
Updated2026-09-16 01:10:36 UTC
DescriptionAn 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from ADP

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

EPSS: 0.004040000 probability, percentile 0.339970000 (date 2026-09-13)

Problem Types: CWE-306 | CWE-306 CWE-306 Missing authentication for critical function

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apache Artemis All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache Artemis affected 2.50.0 2.56.0 semver Not specified
CNA Apache Software Foundation Apache ActiveMQ Artemis affected 1.0.0 2.44.0 semver Not specified

References

ReferenceSourceLinkTags
www.openwall.com/lists/oss-security/2026/09/10/2 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
lists.apache.org/thread/syjch88zw6pfdoso9vs46m23xkgxjbxo [email protected] lists.apache.org Mailing List, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Domenico Francesco Bruscino (en)

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