CVE-2026-50566
Fission: Environment Runtime.Container and Builder.Container SecurityContext bypass allows privileged pod creation
CRITICAL 9.9EPSS 0.5%
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, a tenant with environments.fission.io create/update RBAC can run privileged / allowPrivilegeEscalation / dangerous-capability containers in the Fission function or builder namespace, scheduled under the executor's high-privilege service account — enabling container-sandbox escape, host filesystem and network access, and potential node- and cluster-level compromise. This issue has been patched in version 1.24.0.
- Affected
- fission
- CVSS v3.1 GITHUB
- 9.9 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - EPSS
- 0.51% chance of exploitation in the next 30 days, 42nd percentile
- Published
- 2026-06-10
- Updated
- 2026-06-12