Kubernetes (kubectl): Schwachstelle ermöglicht Manipulation von Dateien
WID-SEC-2026-3613 · first 29.09.2026 · updated 29.09.2026 · CVSS 6,5
What it is about
Kubernetes ist ein Werkzeug zur Automatisierung der Bereitstellung, Skalierung und Verwaltung von containerisierten Anwendungen. Ein Angreifer aus einem angrenzenden Netzwerk kann eine Schwachstelle in Kubernetes ausnutzen, um Dateien zu manipulieren.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- Dateien zu manipulieren
Am I affected?
Affected according to the BSI:
- Open Source Kubernetes kubectl <v1.34.12
- Open Source Kubernetes kubectl <v1.35.9
- Open Source Kubernetes kubectl <v1.36.5
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source Kubernetes kubectl v1.34.12
- Open Source Kubernetes kubectl v1.35.9
- Open Source Kubernetes kubectl v1.36.5
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)
- Kubernetes Security Advisory vom 2026-09-28 discuss.kubernetes.io
- Google Group Kubernetes Security Announce vom 2026-09-28 groups.google.com
- GitHub Issue vom 2026-09-28 github.com
- GitHub Security Advisory GHSA-pw89-p422-jr5j vom 2026-09-28 github.com
- Red Hat Bugtracker 2542443 vom 2026-09-28 bugzilla.redhat.com
- EUVD-2026-88223 vom 2026-09-28 euvd.enisa.europa.eu
CVE: CVE-2026-19444
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.