Kubernetes (ingress-nginx): Schwachstelle ermöglicht Codeausführung
WID-SEC-2026-0650 · first 10.03.2026 · updated 09.04.2026 · CVSS 8,8
What it is about
Kubernetes ist ein Werkzeug zur Automatisierung der Bereitstellung, Skalierung und Verwaltung von containerisierten Anwendungen. Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Kubernetes (ingress-nginx) ausnutzen, um beliebigen Programmcode auszuführen.
Under what conditions?
Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.
What can happen in the worst case
An attacker could use the vulnerability to
- beliebigen Programmcode auszuführen
Am I affected?
Affected according to the BSI:
- Open Source Kubernetes ingress-nginx <1.13.8
- Open Source Kubernetes ingress-nginx <1.14.4
- Open Source Kubernetes ingress-nginx <1.15.0
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 ingress-nginx 1.13.8
- Open Source Kubernetes ingress-nginx 1.14.4
- Open Source Kubernetes ingress-nginx 1.15.0
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)
- GitHub Advisory Database vom 2026-03-09 github.com
- GitHub Advisory Database vom 2026-03-09 github.com
- OSS Security Mailing List vom 2026-03-09 seclists.org
- PoC CVE-2026-3288 vom 2026-04-08 github.com
CVE: CVE-2026-3288
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.