Summaryinfo

A vulnerability, which was classified as critical, has been found in KNIME Business Hub up to 1.15.1/1.16.2/1.17.3. Affected is an unknown function of the component Apache Artemis. The manipulation leads to missing authentication. This vulnerability is listed as CVE-2026-4649. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in KNIME Business Hub up to 1.15.1/1.16.2/1.17.3. This issue affects an unknown functionality of the component Apache Artemis. The manipulation with an unknown input leads to a missing authentication vulnerability. Using CWE to declare the problem leads to CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. Impacted is confidentiality, integrity, and availability. The summary by CVE 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.

It is possible to read the advisory at knime.com. The identification of this vulnerability is CVE-2026-4649 since 03/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 303741 (Linux Distros Unpatched Vulnerability : CVE-2026-4649), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.15.2, 1.16.3 or 1.17.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (303741) and EUVD (EUVD-2026-14786). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• KNIME

Name

• Business Hub

Version

• 1.15.0
• 1.15.1
• 1.16.0
• 1.16.1
• 1.16.2
• 1.17.0
• 1.17.1
• 1.17.2
• 1.17.3

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CPE 2.2info

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