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CVE-2026-115517— Unrestricted network access between execution contexts in KNIME Business Hub

Quick assessment

Affected
KNIME KNIME Business Hub
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 KNIME Business Hub 1.19.0 之前的版本中，执行上下文之间存在不受限制的网络访问权限，这使得已认证的远程用户可以访问不同执行上下文中执行器上的开放网络端口。此问题仅在攻击者知晓被攻击执行器的 IP 地址，且该执行器存在无需进一步身份验证即可访问的开放网络端口时，才会构成安全风险。默认情况下，没有任何网络端口处于开放状态。然而，具体运行中的工作流可能会打开某些端口，从而形成攻击面。作为临时缓解措施，可手动创建网络策略进行限制。

CVSS 6.4 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
KNIME KNIME Business Hub < 1.19.0 affected
1.19.0 unaffected
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I. Basic Information for CVE-2026-115517

Vulnerability Information
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Vulnerability Title
Unrestricted network access between execution contexts in KNIME Business Hub
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的划分
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
KNIME KNIME Business Hub 0 ~ 1.19.0 -

II. Public POCs for CVE-2026-115517

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-115517

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Vendor Advisories for CVE-2026-115517 (1)

Same Patch Batch · KNIME · 2026-10-22 · 7 CVEs total

CVE-2026-115496 6.9 MEDIUM Workflow names may be leaked to unauthenticated users in KNIME Business Hub
CVE-2026-115516 6.9 MEDIUM Basic account information visible to unauthenticated user in Business Hub SaaS
CVE-2026-115502 6.3 MEDIUM DataApp links without logging expose job information to other user in KNIME Business Hub
CVE-2026-115454 5.3 MEDIUM Large tables in data apps can bring down execution services in KNIME Hub
CVE-2026-115494 5.3 MEDIUM CSRF protection could be tricked by forged X-Forwarded-Host header in KNIME Business Hub
CVE-2026-115519 2.1 LOW Sensitive cookies without 'Secure' and 'HttpOnly' attributes in KNIME Business Hub

IV. Related Vulnerabilities

Same product: KNIME Business Hub
Same vendor: KNIME
Same weakness: CWE-653

V. Comments for CVE-2026-115517

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