Bug 2450641 (CVE-2026-4649)

Summary:	CVE-2026-4649 Apache Artemis: KNIME Business Hub: Apache Artemis and KNIME Business Hub: Authentication bypass allows information disclosure and message injection.
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	anthomas, aschwart, asoldano, ataylor, bbaranow, bmaxwell, boliveir, bstansbe, dbruscin, dhanak, dlofthou, drosa, ehelms, fmariani, ggainey, gmalinko, ibek, istudens, ivassile, iweiss, janstey, jrokos, juwatts, kvanderr, kverlaen, mhulan, mnovotny, mosmerov, mposolda, msvehla, nmoumoul, nwallace, osousa, pberan, pbizzarr, pcreech, pdelbell, pesilva, pjindal, pmackay, rchan, rmartinc, rstancel, rstepani, sausingh, smaestri, smallamp, ssilvert, sthorger, tcunning, thjenkin, tmalecek, vdosoudi, vmuzikar, yfang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in Apache Artemis and KNIME Business Hub. A user with normal privileges and the ability to execute workflows in an executor can exploit an authentication bypass vulnerability. This allows the user to install and register a federated mirror without authentication to the original Apache Artemis instance. Consequently, the attacker can read all internal messages and inject new messages, leading to information disclosure and potential data integrity issues.	Story Points:	---
Clone Of:		Environment:
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Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-03-24 09:01:45 UTC

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.