{"id":"CVE-2026-27446","title":"Missing Authentication for Critical Function (CWE-306) vulnerability in Apache Artemis, Apache ActiveMQ Artemis","summary":"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 federati…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-306"],"vendor":"apache","product":"artemis","affected":["artemis >= 2.11.0, <= 2.44.0","artemis = 2.50.0"],"patched":["jboss_eap_7_4_els_for_rhel_7_server","jboss_eap_8_1_for_rhel 8","jboss_eap_8_1_for_rhel 9","amq_broker 7.12.6","amq_broker 7.13.4","jboss_enterprise_application_platform 7.4.25","jboss_enterprise_application_platform 8.1","build_of_apache_camel_4_18_1_for_spring_boot 3.5.14"],"published":"2026-03-04","updated":"2026-09-18","sourceUpdated":"2026-09-18T13:17:45.003","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-27446","references":[{"url":"https://lists.apache.org/thread/jwpsdc8tdxotm98od8n8n30fqlzoc8gg","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/03/03/4","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2026/03/04/1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2026:17668","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:18054","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:18055","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:18059","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:3955","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:3957","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:53644","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:53645","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:53646","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-27446","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2444320","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-085541.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27446.json","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:53806","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-27446"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27446"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.10049,"epssPercentile":0.95407,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-03-04T00:00:00+00:00"},"scores":{"nvd":9.8,"cna":9.3,"vendor":9.1},"ingestedAt":"2026-08-05T11:47:23.788Z","slug":"CVE-2026-27446","body":"## Overview\n\nMissing 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:\n\n- incoming Core protocol connections from untrusted sources to the broker\n\n- outgoing Core protocol connections from the broker to untrusted targets\n\nThis issue affects:\n\n- Apache Artemis from 2.50.0 through 2.51.0\n\n- Apache ActiveMQ Artemis from 2.11.0 through 2.44.0.\n\nUsers are recommended to upgrade to Apache Artemis version 2.52.0, which fixes the issue.\n\nThe issue can be mitigated by one of the following:\n\n- Remove Core protocol support from any acceptor receiving connections from untrusted sources. Incoming Core protocol connections are supported by default via the \"artemis\" acceptor listening on port 61616. See the \"protocols\" URL parameter configured for the acceptor. An acceptor URL without this parameter supports all protocols by default, including Core.\n\n- Use two-way SSL (i.e. certificate-based authentication) in order to force every client to present the proper SSL certificate when establishing a connection before any message protocol handshake is attempted. This will prevent unauthenticated exploitation of this vulnerability.\n\n- Implement and deploy a Core interceptor to deny all Core downstream federation connect packets. Such packets have a type of (int) -16 or (byte) 0xfffffff0. Documentation for interceptors is available at  https://artemis.apache.org/components/artemis/documentation/latest/intercepting-operations.html .\n\n## Affected\n\n- `artemis >= 2.11.0, <= 2.44.0`\n- `artemis = 2.50.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:53644** · Red Hat · fixed in: Red Hat JBoss EAP 7.4 ELS for RHEL 7 Server · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53644)\n- **RHSA-2026:18054** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 8 · released 2026-05-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:18054)\n- **RHSA-2026:18055** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 9 · released 2026-05-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:18055)\n- **RHSA-2026:3955** · Red Hat · fixed in: Red Hat AMQ Broker 7.12.6 · released 2026-03-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:3955)\n- **RHSA-2026:3957** · Red Hat · fixed in: Red Hat AMQ Broker 7.13.4 · released 2026-03-06 · [advisory](https://access.redhat.com/errata/RHSA-2026:3957)\n- **RHSA-2026:53806** · Red Hat · fixed in: Red Hat JBoss Enterprise Application Platform 7.4.25 · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53806)\n- **RHSA-2026:18059** · Red Hat · fixed in: Red Hat JBoss Enterprise Application Platform 8.1 · released 2026-05-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:18059)\n- **RHSA-2026:17668** · Red Hat · fixed in: Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14 · released 2026-05-14 · [advisory](https://access.redhat.com/errata/RHSA-2026:17668)\n- **Red Hat VEX** · Important · affected: Red Hat build of OptaPlanner 8, Red Hat Fuse 7, Red Hat Process Automation 7 · no fix planned: Red Hat build of OptaPlanner 8, Red Hat Fuse 7, Red Hat Process Automation 7 · updated 2026-09-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27446.json)\n- **RHSA-2026:53645** · Red Hat · fixed in: Red Hat JBoss EAP 7.4 ELS for RHEL 8 · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53645)\n- **RHSA-2026:53646** · Red Hat · fixed in: Red Hat JBoss EAP 7.4 ELS for RHEL 9 · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53646)","depth":"midnight","depthScore":56,"depthScoreParts":{"impact":53.9,"likelihood":2,"exploitation":0,"ransomware":0},"changes":[]}