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CVE-2026-27446

9.8 · CRITICAL

Missing Authentication for Critical Function (CWE-306) vulnerability in Apache Artemis, Apache ActiveMQ Artemis.

Published Mar 4, 2026CWE-306EPSS 1.18%

Overview

CVE-2026-27446 is a critical-severity vulnerability. It was published on March 4, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Missing Authentication for Critical Function (CWE-306) vulnerability in Apache Artemis, Apache ActiveMQ Artemis. An unauthenticated remote attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker. This could potentially result in message injection into any queue and/or message exfiltration from any queue via the rogue broker. This impacts environments that allow both:

- incoming Core protocol connections from untrusted sources to the broker

- outgoing Core protocol connections from the broker to untrusted targets

This issue affects:

- Apache Artemis from 2.50.0 through 2.51.0

- Apache ActiveMQ Artemis from 2.11.0 through 2.44.0.

Users are recommended to upgrade to Apache Artemis version 2.52.0, which fixes the issue.

The issue can be mitigated by one of the following:

- Remove Core protocol support from any acceptor receiving connections from untrusted sources. Incoming Core protocol c

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.apache.org/thread/jwpsdc8tdxotm98od8n8n30fqlzoc8ggRefwww.openwall.com/lists/oss-security/2026/03/03/4Refwww.openwall.com/lists/oss-security/2026/03/04/1Refaccess.redhat.com/errata/RHSA-2026:17668Refaccess.redhat.com/errata/RHSA-2026:18054Refaccess.redhat.com/errata/RHSA-2026:18055Refaccess.redhat.com/errata/RHSA-2026:18059Refaccess.redhat.com/errata/RHSA-2026:3955Refaccess.redhat.com/errata/RHSA-2026:3957Refaccess.redhat.com/errata/RHSA-2026:53644

How CyberStrike helps

Frequently asked questions

What is CVE-2026-27446?

CVE-2026-27446 is a critical-severity vulnerability. It was published on March 4, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-27446?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-27446?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-27446?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-27446 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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