Red Hat OpenShift Service Mesh (Kiali): Schwachstelle ermöglicht Denial of Service
WID-SEC-2026-0479 · first 24.02.2026 · updated 14.09.2026 · CVSS 7,5
What it is about
Red Hat OpenShift ist eine "Platform as a Service" (PaaS) Lösung zur Bereitstellung von Applikationen in der Cloud. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat OpenShift Service Mesh ausnutzen, um einen Denial of Service Angriff durchzuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Denial of Service Angriff durchzuführen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- IBM MQ
- HCL BigFix WebUI
- Red Hat OpenShift Service Mesh 3.1
- Red Hat OpenShift Service Mesh 3.0
- Red Hat OpenShift Service Mesh 3.2
- IBM App Connect Enterprise
- IBM Rational Build Forge <8.0.0.30
- Red Hat OpenShift Migration Toolkit for Containers
- IBM Cognos Analytics <12.1.3 FP2
- IBM Cognos Analytics <12.0.4 FP3
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- IBM Rational Build Forge 8.0.0.30
- IBM Cognos Analytics 12.1.3 FP2
- IBM Cognos Analytics 12.0.4 FP3
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- Red Hat Security Advisory vom 2026-02-23 access.redhat.com
- Red Hat Security Advisory vom 2026-02-23 access.redhat.com
- Red Hat Security Advisory vom 2026-02-23 access.redhat.com
- IBM Security Bulletin 7263555 vom 2026-03-13 www.ibm.com
- Red Hat Security Advisory RHSA-2026:5636 vom 2026-03-24 access.redhat.com
- Red Hat Security Advisory RHSA-2026:5633 vom 2026-03-24 access.redhat.com
- Red Hat Security Advisory RHSA-2026:5665 vom 2026-03-24 access.redhat.com
- Red Hat Security Advisory RHSA-2026:5174 vom 2026-03-24 access.redhat.com
- Red Hat Security Advisory RHSA-2026:5807 vom 2026-03-25 access.redhat.com
- Red Hat Security Advisory RHSA-2026:5142 vom 2026-03-25 access.redhat.com
- Red Hat Security Advisory RHSA-2026:6174 vom 2026-03-30 access.redhat.com
- Red Hat Security Advisory RHSA-2026:6170 vom 2026-03-30 access.redhat.com
- Red Hat Security Advisory RHSA-2026:6192 vom 2026-03-30 access.redhat.com
- IBM Security Bulletin 7268121 vom 2026-03-31 www.ibm.com
- Red Hat Security Advisory RHSA-2026:6277 vom 2026-03-31 access.redhat.com
- Red Hat Security Advisory RHSA-2026:6404 vom 2026-04-01 access.redhat.com
- Red Hat Security Advisory RHSA-2026:6428 vom 2026-04-02 access.redhat.com
- Red Hat Security Advisory RHSA-2026:8229 vom 2026-04-15 access.redhat.com
- Red Hat Security Advisory RHSA-2026:8500 vom 2026-04-16 access.redhat.com
- Red Hat Security Advisory RHSA-2026:8499 vom 2026-04-16 access.redhat.com
- Red Hat Security Advisory RHSA-2026:8501 vom 2026-04-16 access.redhat.com
- Red Hat Security Advisory RHSA-2026:9848 vom 2026-04-22 access.redhat.com
- Red Hat Security Advisory RHSA-2026:10184 vom 2026-04-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:11414 vom 2026-04-29 access.redhat.com
- Red Hat Security Advisory RHSA-2026:13548 vom 2026-05-04 access.redhat.com
and 7 more sources in the original advisory
CVE: CVE-2026-25639
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.