RHSA-2026:3955

Vulnerability from csaf_redhat - Published: 2026-03-05 21:59 - Updated: 2026-11-05 20:12
Summary
Red Hat Security Advisory: Red Hat AMQ Broker 7.12.6 release and security update
Severity
Important
Notes
Topic: Red Hat AMQ Broker 7.12.6 is now available from the Red Hat Customer Portal. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: AMQ Broker is a high-performance messaging implementation based on ActiveMQ Artemis. It uses an asynchronous journal for fast message persistence, and supports multiple languages, protocols, and platforms. This release of Red Hat AMQ Broker 7.12.6 includes security and bug fixes, and enhancements. For further information, refer to the release notes linked to in the References section. Security Fix(es): * (CVE-2026-27446) artemis-server: Apache Artemis, Apache ActiveMQ Artemis: Message injection and exfiltration due to missing authentication For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2026-27446

A flaw was found in Apache Artemis and Apache ActiveMQ Artemis. An unauthenticated remote attacker can exploit a missing authentication for critical function vulnerability by using the Core protocol. This allows the attacker to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker. The primary consequence is the potential for message injection into any queue and/or message exfiltration from any queue via the rogue broker.

9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE-306 - Missing Authentication for Critical Functionality
Affected products
Product Identifier Version Remediation
Red Hat AMQ Broker 7.12.6
Red Hat / Red Hat JBoss AMQ
 cpe:/a:redhat:amq_broker:7.12 —
Vendor Fix fix
Workaround
Threats
Impact Important
References
To clipboard 

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          "details": "Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings.\n\nThe References section of this erratum contains a download link (you must log in to download the update).",
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          "details": "To mitigate this issue, restrict Core protocol support on acceptors receiving connections from untrusted sources. The default \"artemis\" acceptor on port 61616 supports all protocols, including Core. Modify the acceptor URL to explicitly exclude the Core protocol using the \"protocols\" URL parameter. Alternatively, configure two-way SSL with certificate-based authentication to prevent unauthenticated exploitation. A service restart or reload may be required for changes to take effect.",
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            "confidentialityImpact": "HIGH",
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            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
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