CVE-2026-4649CWE-306

Auth bypass in Apache Artemis allows reading all internal messages

Medium · published March 24, 2026

CVSS v4.0
5.3
EPSS
1%
Percentile
49.3
In the wild
Unconfirmed
What it is

Apache Artemis before version 2.52.0 is affected by an authentication bypass flaw which allows reading all messages exchanged via the broker and injection of new message ( CVE-2026-27446 https://www.cve.org/CVERecord ). Since KNIME Business Hub uses Apache Artemis it is also affected by the issue. However, since Apache Artemis is not exposed to the outside it requires at least normal user privileges and the ability to execute workflows in an executor. Such a user can install and register a federated mirror without authentication to the original Apache Artemis instance and thereby read all internal messages and inject new messages.

The issue affects all versions of KNIME Business Hub. A fixed version of Apache Artemis is shipped with versions 1.18.0, 1.17.4, and 1.16.3.

We recommend updating to a fixed version as soon as possible since no workaround is known.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/AU:Y/R:U/V:C/RE:M/U:Amber
EPSS
0.00626 · 49.3th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-03-24T08:15Z
EPSS history
Timeline
  • 24 MAR 08:15Z
    Auth bypass in Apache Artemis allows reading all internal messages
    cvelistv5