{"api_version":"1","generated_at":"2026-05-09T11:17:47+00:00","cve":"CVE-2026-42183","urls":{"html":"https://cve.report/CVE-2026-42183","api":"https://cve.report/api/cve/CVE-2026-42183.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-42183","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-42183"},"summary":{"title":"Argo Workflows: SSO RBAC Delegation Nil Pointer Dereference DoS (gatekeeper.go)","description":"Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From version 4.0.0 to before version 4.0.5, a nil pointer dereference in server/auth/gatekeeper.go rbacAuthorization() causes a panic (denial of service) for SSO users whose claims match a namespace-level RBAC rule but not an SSO-namespace rule, when SSO_DELEGATE_RBAC_TO_NAMESPACE=true. 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From version 4.0.0 to before version 4.0.5, a nil pointer dereference in server/auth/gatekeeper.go rbacAuthorization() causes a panic (denial of service) for SSO users whose claims match a namespace-level RBAC rule but not an SSO-namespace rule, when SSO_DELEGATE_RBAC_TO_NAMESPACE=true. This issue has been patched in version 4.0.5.","Type":"Description","Title":"Argo Workflows: SSO RBAC Delegation Nil Pointer Dereference DoS "}]}}}