Vulnerability Description
Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.23.0, Fission runtime pods were created with ServiceAccountName: fission-fetcher, and the fission-fetcher ServiceAccount was granted namespace-wide get on secrets and configmaps (it needs that to load function code, env vars, and config). The runtime pod's automounted token was reachable from inside the user's function container at /var/run/secrets/kubernetes.io/serviceaccount/token, so user-supplied function code inherited the same Kubernetes API privileges and could read any secret or configmap in the function's namespace — far beyond the Function.spec.secrets allowlist that the function specification suggests. This issue has been patched in version 1.23.0.
Related Weaknesses (CWE)
References
- https://github.com/fission/fission/pull/3366
- https://github.com/fission/fission/releases/tag/v1.23.0
- https://github.com/fission/fission/security/advisories/GHSA-85g2-pmrx-r49q
FAQ
What is CVE-2026-46617?
CVE-2026-46617 is a documented vulnerability. Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.23.0, Fission runtime pods were created...
How severe is CVE-2026-46617?
CVSS scoring is not yet available for CVE-2026-46617. Check NVD for updates.
Is there a patch for CVE-2026-46617?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.