CVE-2026-50564 – Fission Environment CRD podspec passthrough enables hostPID/hostNetwork/privileged pods, node escape

​CVE ID :CVE-2026-50564

Published : June 10, 2026, 6:17 p.m. | 1 hour ago

Description :Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, Fission’s Environment CRD exposes spec.runtime.podSpec and spec.builder.podSpec, which are merged into the Kubernetes pod specs for runtime and builder pods. The merge logic propagated hostNetwork, hostPID, hostIPC, container privileged, and serviceAccountName from the user-supplied podspec with no filtering, and Environment.Validate performed no security-relevant checks on these fields. This issue has been patched in version 1.24.0.

Severity: 9.9 | CRITICAL

Visit the link for more details, such as CVSS details, affected products, timeline, and more… To Read More Visit Read More