CVE-2026-49823: 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, a Fission Function spec carries three reference types — Secret, ConfigMap, and Package. The first two were namespace-validated by the admission webhook; PackageRef.Namespace was not. 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.