Google Cloud Platform Envoy Proxy, Istio und Service Mesh: Mehrere Schwachstellen
WID-SEC-2026-0704 · first 12.03.2026 · updated 02.04.2026 · CVSS 7,5
What it is about
Google Cloud Platform (GCP) ist eine Sammlung von Cloud-Computing-Diensten von Google, die Infrastruktur, Datenanalyse, maschinelles Lernen und Entwicklungstools bietet. Unternehmen können dadurch Anwendungen in der Cloud zu aufbauen und skalierbar bereitzustellen. Ein Angreifer kann mehrere Schwachstellen in Google Cloud Platform ausnutzen, um Sicherheitsvorkehrungen zu umgehen, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.
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
- Sicherheitsvorkehrungen zu umgehen
- vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen
Am I affected?
Affected according to the BSI:
- Amazon Linux 2
- Red Hat Enterprise Linux
- Google Cloud Platform Envoy Proxy
- Google Cloud Platform Istio
- Google Cloud Platform Service Mesh <1.28.5-asm.9
- Google Cloud Platform Service Mesh <1.27.8-asm.7
- Google Cloud Platform Service Mesh <1.26.8-asm.3
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Google Cloud Platform Service Mesh 1.28.5-asm.9
- Google Cloud Platform Service Mesh 1.27.8-asm.7
- Google Cloud Platform Service Mesh 1.26.8-asm.3
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)
- Google Cloud Sicherheitsbulletin vom 2026-03-11 docs.cloud.google.com
- Google Cloud Sicherheitsbulletin vom 2026-03-11 docs.cloud.google.com
- Red Hat Security Advisory RHSA-2026:5952 vom 2026-03-26 access.redhat.com
- Red Hat Security Advisory RHSA-2026:5950 vom 2026-03-26 access.redhat.com
- Red Hat Security Advisory RHSA-2026:5948 vom 2026-03-26 access.redhat.com
- Amazon Linux Security Advisory ALAS2ECS-2026-100 vom 2026-04-01 alas.aws.amazon.com
CVE: CVE-2026-26308, CVE-2026-26309, CVE-2026-26310, CVE-2026-26311, CVE-2026-26330, CVE-2026-31837, CVE-2026-31838
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.