CVE-2026-57967CWE-306

CVE-2026-57967

Critical · published September 10, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
73.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01468 · 73.5th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-09-10T09:17Z
Affected products (2)
ProductVersionsFixed in
apache/artemis≥ 1.0.0, < 2.44.02.44.0
apache/artemis≥ 2.50.0, < 2.57.02.57.0
References (3)
https://lists.apache.org/thread/fxfjqrdsnksw5f17zs3yqo864lblgv6y · [email protected]http://www.openwall.com/lists/oss-security/2026/09/10/5 · af854a3a-2127-422b-91ae-364da2661108https://github.com/c0dem4sters/CVE-2026-57967 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 11 SEP 03:18Z
    EPSS moved — → 0%
    epss
  • 10 SEP 04:43Z
    Apache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachment
    cvelistv5