CVE-2026-49824
Fission: Cross-namespace Environment reference via unvalidated EnvironmentRef in Function admission webhook
CVSS Score
8.5
EPSS Score
0.0%
EPSS Percentile
0th
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, the Fission Function admission webhook (pkg/webhook/function.go) validated that spec.secrets[].namespace and spec.configmaps[].namespace equalled the function's own namespace but performed no equivalent check on spec.environment.namespace. This issue has been patched in version 1.24.0.
| CWE | CWE-284 CWE-863 |
| Vendor | fission |
| Product | fission |
| Published | Jun 10, 2026 |
| Last Updated | Jun 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None
Affected Versions
fission / fission
< 1.24.0