CVE-2026-50564 Details
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.
A vulnerability in Fission's Environment Custom Resource Definition (CRD) allows users to create or update environments with unfiltered pod specifications. This issue, present in Fission versions prior to 1.24.0, enables the propagation of sensitive fields such as hostNetwork, hostPID, hostIPC, and container privileges into runtime and builder pod specifications. The lack of proper validation on these fields created a pathway for namespace users to deploy privileged pods with host access, potentially leading to a full compromise of the Kubernetes node.
This vulnerability has been patched in Fission version 1.24.0. Users should update to this version to address the issue.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 10, 2026CISA-ADP
Assessed Jun 11, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/fission/fission/pull/3391 | [email protected] | Source CodeVendor |
| https://github.com/fission/fission/releases/tag/v1.24.0 | [email protected] | Release NotesVendor |
| https://github.com/fission/fission/security/advisories/GHSA-gx55-f84r-v3r7 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-269 | Improper Privilege Management | [email protected] |
| CWE-284 | Improper Access Control | [email protected] |
| CWE-693 | Protection Mechanism Failure | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Fission | <= 1.23.0 (semver) |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 10, 2026 | New CVE Received | [email protected] |