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.
Published: 2026-06-10
Score: 9.9 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-gx55-f84r-v3r7 Fission Environment CRD podspec passthrough enables hostPID/hostNetwork/privileged pods, node escape
History

Thu, 11 Jun 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Fission
Fission fission
Vendors & Products Fission
Fission fission

Wed, 10 Jun 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 10 Jun 2026 18:15:00 +0000

Type Values Removed Values Added
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.
Title Fission Environment CRD podspec passthrough enables hostPID/hostNetwork/privileged pods, node escape
Weaknesses CWE-269
CWE-284
CWE-693
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-12T03:55:21.976Z

Reserved: 2026-06-04T21:34:34.426Z

Link: CVE-2026-50564

cve-icon Vulnrichment

Updated: 2026-06-10T18:47:39.902Z

cve-icon NVD

Status : Deferred

Published: 2026-06-10T18:17:12.740

Modified: 2026-06-10T19:37:41.437

Link: CVE-2026-50564

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-11T10:41:17Z

Weaknesses