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. This issue a…

Critical CVSS 9.8

CVECVE-2026-57967

First seen2026-09-16 02:15 UTC

Disclosed2026-09-10 05:17 UTC

Last updated2026-09-16 02:15 UTC

Channel statusauto

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. This issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apache ActiveMQ Artemis: from 1.0.0 through 2.44.0. Users are recommended to upgrade to version 2.57.0, which fixes the issue.

In-depth triage

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

Sources

NVD DATABASE

Original Links

https://lists.apache.org/thread/fxfjqrdsnksw5f17zs3yqo864lblgv6y Mailing List
http://www.openwall.com/lists/oss-security/2026/09/10/5 Mailing List

Timeline

2026-09-16 nvd_ingest NVD