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Vulnerability record · CVE-2026-50566 · published 10 June 2026

CVE-2026-50566: Execution with unnecessary privileges vulnerability

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.

9.9 CVSS 3.1 Critical EPSS 0.51% · top 59.2% CWE-250 · Execution with unnecessary privilegesCWE-269 · Improper privilege management Deferred
9.9CVSS 3.1 base score
0.51%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

LinkTags
https://github.com/fission/fission/pull/3406
https://github.com/fission/fission/releases/tag/v1.24.0
https://github.com/fission/fission/security/advisories/GHSA-m63v-2g9w-2w6v

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Source: NIST National Vulnerability Database (record CVE-2026-50566), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.