{"id":"CVE-2026-57967","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-57967","summary":"An unauthenticated remote attacker can craft a CORE protocol SESSION_REATTACH packet to steal an existing session and assume ongoing execution of the previously authenticated session.\n\n\n\nThis…","details":"An unauthenticated remote attacker can craft a CORE protocol SESSION_REATTACH packet to steal an existing session and assume ongoing execution of the previously authenticated session.\n\n\n\nThis issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apache ActiveMQ Artemis: from 1.0.0 through 2.44.0.\n\n\n\nUsers are recommended to upgrade to version 2.57.0, which fixes the issue.","published":"2026-09-10T05:17:01.443","modified":"2026-09-10T16:17:16.243","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://lists.apache.org/thread/fxfjqrdsnksw5f17zs3yqo864lblgv6y"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/09/10/5"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-10T16:17:16.243"}}