GO-2026-5857 Fission: Environment Runtime.Container and Builder.Container SecurityContext bypass allows privileged pod creation in github.com/fission/fission

Fission: Environment Runtime.Container and Builder.Container SecurityContext bypass allows privileged pod creation in github.com/fission/fission...

GHSA-M63V-2G9W-2W6V Fission: Environment Runtime.Container and Builder.Container SecurityContext bypass allows privileged pod creation

Summary A follow-up bypass of the round-4 PodSpec hardening GHSA-gx55-f84r-v3r7, GHSA-wmgg-3p4h-48x7, GHSA-v455-mv2v-5g92. Those advisories validate and sanitize the PodSpec spec.runtime.podSpec / spec.builder.podSpec / function.spec.podSpec, but the Environment CRD also exposes...

Execution with Unnecessary Privileges

Overview Affected versions of this package are vulnerable to Execution with Unnecessary Privileges via the Environment Runtime.Container and Builder.Container processes. An attacker can gain elevated privileges and execute arbitrary code with high-level access by creating or updating environments...

Execution with Unnecessary Privileges

Overview Affected versions of this package are vulnerable to Execution with Unnecessary Privileges via the Environment Runtime.Container and Builder.Container processes. An attacker can gain elevated privileges and execute arbitrary code with high-level access by creating or updating environments...

Execution with Unnecessary Privileges

Overview Affected versions of this package are vulnerable to Execution with Unnecessary Privileges via the Environment Runtime.Container and Builder.Container processes. An attacker can gain elevated privileges and execute arbitrary code with high-level access by creating or updating environments...

CVE-2026-50566

Fission prior to v1.24.0 is affected: a tenant with environments.fission.io create/update RBAC could run privileged / allowPrivilegeEscalation / dangerous-capability containers in the Fission function or builder namespace, scheduled under the executor’s high-privilege service account. This enable...

CVE-2026-50566 Fission: Environment Runtime.Container and Builder.Container SecurityContext bypass allows privileged pod creation

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...