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Vulnerability record · CVE-2026-50564 · published 10 June 2026

CVE-2026-50564: Improper privilege management 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, Fission's Environment CRD exposes spec.runtime.podSpec and spec.builder.podSpec, which are merged into the Kubernetes pod specs for runtime and builder pods. The merge logic propagated hostNetwork, hostPID, hostIPC, container privileged, and serviceAccountName from the user-supplied podspec with no filtering, and Environment.Validate performed no security-relevant checks on these fields. This issue has been patched in version 1.24.0.

9.9 CVSS 3.1 Critical EPSS 0.51% · top 59.2% CWE-269 · Improper privilege managementCWE-284 · Improper access control 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, Fission's Environment CRD exposes spec.runtime.podSpec and spec.builder.podSpec, which are merged into the Kubernetes pod specs for runtime and builder pods. The merge logic propagated hostNetwork, hostPID, hostIPC, container privileged, and serviceAccountName from the user-supplied podspec with no filtering, and Environment.Validate performed no security-relevant checks on these fields. 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/3391
https://github.com/fission/fission/releases/tag/v1.24.0
https://github.com/fission/fission/security/advisories/GHSA-gx55-f84r-v3r7

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Source: NIST National Vulnerability Database (record CVE-2026-50564), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.