A security issue was discovered with Kubernetes that could enable users to send network traffic to locations they would otherwise not have access to via a confused deputy attack.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-25740
• kubernetes/kubernetes#103675
• https://groups.google.com/g/kubernetes-security-announce/c/WYE9ptrhSLE
• https://security.netapp.com/advisory/ntap-20211014-0001/