CVE-2026-4649: medium-severity vulnerability in KNIME Business Hub
Auth bypass in Apache Artemis allows reading all internal messages
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.4%
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.
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
Affected products
KNIME · KNIME Business HubRelated CVEs — KNIME Business Hub
In the same product, most dangerous first.
CVE-2023-2541MEDIUMSensitive information disclosure in KNIME Hub Web ApplicationEPSS 0.6%CVE-2024-6598HIGHDenial-of-service on KNIME Business Hub when certain jobs are executedEPSS 0.5%CVE-2025-2787HIGHIngress-nginx vulnerability in KNIME Business HubEPSS 0.5%CVE-2026-115517MEDIUMUnrestricted network access between execution contexts in KNIME Business HubEPSS 0.4%CVE-2023-3140MEDIUMKNIME Hub Web Application is vulnerable to clickjackingEPSS 0.4%CVE-2026-115496MEDIUMWorkflow names may be leaked to unauthenticated users in KNIME Business HubEPSS 0.4%