CVE-2026-49824: Fission: Cross-namespace Environment reference via unvalidated EnvironmentRef in Function admission webhook
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.
References
- github.com/advisories/GHSA-cvw6-gfvv-953q
- github.com/fission/fission/commit/80e7ba55228e1ef426f51353e25d2682ec61de34
- github.com/fission/fission/pull/3389
- github.com/fission/fission/releases/tag/v1.24.0
- github.com/fission/fission/security/advisories/GHSA-cvw6-gfvv-953q
- nvd.nist.gov/vuln/detail/CVE-2026-49824
Code Behaviors & Features
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