VMware Tanzu Spring Cloud Function: Mehrere Schwachstellen ermöglichen Denial of Service
WID-SEC-2026-1436 · first 08.05.2026 · updated 02.06.2026 · CVSS 5,7
What it is about
VMware Tanzu Spring Cloud ist eine Plattform zur Bereitstellung und Verwaltung von Spring-Anwendungen in Cloud-Umgebungen unter Verwendung von Microservices-Architekturen. Ein lokaler Angreifer kann mehrere Schwachstellen in VMware Tanzu Spring Cloud Function ausnutzen, um einen Denial of Service Angriff durchzuführen.
Under what conditions?
Only with access to the device or an account on it. Often the second step after a phishing email.
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:
- VMware Tanzu Spring Cloud Function <3.2.16
- VMware Tanzu Spring Cloud Function <4.2.6
- VMware Tanzu Spring Cloud Function <4.3.3
- VMware Tanzu Spring Cloud Function <5.0.2
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- VMware Tanzu Spring Cloud Function 3.2.16
- VMware Tanzu Spring Cloud Function 4.2.6
- VMware Tanzu Spring Cloud Function 4.3.3
- VMware Tanzu Spring Cloud Function 5.0.2
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)
- Spring Security Advisories vom 2026-05-07 spring.io
- Spring Security Advisories vom 2026-05-07 spring.io
CVE: CVE-2026-40989, CVE-2026-40990
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.