CVE-2026-46612: Fission

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.23.0, the Fission storagesvc component registers archive CRUD handlers (/v1/archive GET / POST / DELETE and /v1/archives list) directly on its HTTP router without performing any authentication or authorization. Any caller able to reach the storagesvc ClusterIP — including any other workload in the same Kubernetes cluster — could enumerate archive IDs, download archives belonging to other tenants, upload arbitrary archive content, and delete archives. This issue has been patched in version 1.23.0.

Affected products

• Fission Fission: before 1.23.0 (fixed in 1.23.0)

Published 2026-06-10. Last modified 2026-06-17.