{"api_version":"1","generated_at":"2026-05-12T19:27:44+00:00","cve":"CVE-2026-27446","urls":{"html":"https://cve.report/CVE-2026-27446","api":"https://cve.report/api/cve/CVE-2026-27446.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-27446","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-27446"},"summary":{"title":"Apache Artemis, Apache ActiveMQ Artemis: Auth bypass for Core downstream federation","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. 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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:</p><p>- incoming Core protocol connections from untrusted sources to the broker</p><p>- outgoing Core protocol connections from the broker to untrusted targets</p><p>This issue affects:</p><p>- Apache Artemis from 2.50.0 through 2.51.0</p><p>- Apache ActiveMQ Artemis from 2.11.0 through 2.44.0.</p><p>Users are recommended to upgrade to Apache Artemis version 2.52.0, which fixes the issue.</p><p>The issue can be mitigated by one of the following:</p><p>- Remove Core protocol support from any acceptor receiving connections from untrusted sources. 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