---
id: CVE-2026-115517
title: Unrestricted network access between execution contexts in KNIME Business Hub
summary: >-
  Unrestricted network access between execution contexts in KNIME Business Hub
  before version 1.19.0 allows an authenticated remote user to access open
  network ports on executors in different execution contexts. This only poses a
  security …
severity: medium
cvss: 6.4
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:H/SA:H'
cvssSource: cna
cwe:
  - CWE-653
vendor: KNIME
product: KNIME Business Hub
affected:
  - business_hub < 1.19.0
published: '2026-10-22'
updated: '2026-10-22'
sourceUpdated: '2026-10-22T18:05:11.649Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-115517'
references:
  - url: 'https://www.knime.com/security/advisories'
tags:
  - cve.org
ingestedAt: '2026-10-22T22:00:50.362Z'
---

## Overview

Unrestricted network access between execution contexts in KNIME Business Hub before version 1.19.0 allows an authenticated remote user to access open network ports on executors in different execution contexts. This only poses a security issue if the IP address of the attacked executor is know and there are open network ports that provided access without further authentication. By default no network ports are open. However, depending on the running workflows, ports may be opened and provide an attack surface. As a workaround, network policies can be created manually.

## Affected

- `business_hub < 1.19.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.