What is CVE-2025-26521?

CVE-2025-26521 is a high-severity vulnerability in Apache Cloudstack, classified under Information Disclosure. CVSS score: 8.1/10. Published 2025-06-10.

How severe is CVE-2025-26521?

High severity. CVSS v3 base score is 8.1 out of 10.

Information disclosure in Apache Cloudstack

CVE-2025-26521

When an Apache CloudStack user-account creates a CKS-based Kubernetes cluster in a project, the API key and the secret key of the 'kubeadmin' user of the caller account are used to create the secret config in the CKS-based Kubernetes clust…

Vulnerability class: Information Disclosure

EPSS: 0.006 (44.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Apache Cloudstack
Apache Software Foundation Cloudstack — versions 4.17.0.0, 4.20.0.0

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

security@apache.org (vendor-advisory, Vendor Advisory)
security@apache.org (Broken Link, third-party-advisory)
security@apache.org (Vendor Advisory, mailing-list, Mailing List)

Frequently asked questions

What is CVE-2025-26521?: CVE-2025-26521 is a high-severity vulnerability in Apache Cloudstack, classified under Information Disclosure. CVSS score: 8.1/10. Published 2025-06-10.
How severe is CVE-2025-26521?: High severity. CVSS v3 base score is 8.1 out of 10.