CVE-2026-49821: Fission

High severity, CVSS 7.7. EPSS: 0.4% 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 1.24.0, Fission's buildermgr controller processed Package CRDs without verifying that Package.spec.environment.namespace matched Package.metadata.namespace. This issue has been patched in version 1.24.0.

Affected products

• Fission Fission: before 1.24.0 (fixed in 1.24.0)

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