critical9.9
CVE-2026-50566
Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes.
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/fission/fission | <= 1.23.0 | 1.24.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-m63v-2g9w-2w6v
- https://github.com/fission/fission/security/advisories/GHSA-m63v-2g9w-2w6v
- https://nvd.nist.gov/vuln/detail/CVE-2026-50566
- https://github.com/fission/fission/pull/3406
- https://github.com/fission/fission/commit/695d3e97e3a20463ab7c8c081843e69e65e952e5
- https://github.com/fission/fission/releases/tag/v1.24.0