CVE-2026-118264

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{"bugzilla": {"description": "github.com/labstack/echo: Echo: Rejected WebSocket upgrades can bypass Echo route-level access controls", "id": "2563120", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2563120"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-444", "details": ["Echo is a Go web framework. From 4.0.0 until 4.16.1 and 5.4.1, Echo's Proxy middleware selects a raw tunnel from a client WebSocket upgrade request before verifying that the configured upstream accepted the upgrade. If the upstream rejects the upgrade with an ordinary keep-alive response, later HTTP requests on the connection are sent directly to that upstream without passing through Echo's router or route-specific middleware. This can bypass authentication or authorization enforced only by Echo routes, but requires an accessible proxy route, a cooperating rejected-upgrade response, and a target without independent upstream authorization. This issue is fixed in 4.16.1 and 5.4.1.", "A flaw was found in Echo's Proxy middleware. When a client requests a WebSocket upgrade, the middleware establishes a direct network tunnel before verifying whether the upstream server accepted the upgrade. If the upstream server rejects the upgrade while keeping the connection alive, subsequent HTTP requests sent over that connection bypass Echo's routing and route-specific middleware. A remote attacker can exploit this flaw to gain unauthorized access to protected upstream resources that rely solely on Echo for access control."], "mitigation": {"lang": "en:us", "value": "Disable or avoid using the Proxy middleware for WebSocket upgrade paths until a patched version is deployed, or enforce independent authentication and authorization directly at the upstream service layer."}, "name": "CVE-2026-118264", "package_state": [{"cpe": "cpe:/a:redhat:ansible_automation_orchestrator:2026.8", "fix_state": "Affected", "package_name": "ansible-automation-platform/automation-orchestrator-temporal-rhel9", "product_name": "Ansible Automation Orchestrator 2026"}, {"cpe": "cpe:/a:redhat:cost_management_on_premise:1", "fix_state": "Affected", "package_name": "costmanagement/costmanagement-ros-ocp-backend-rhel9", "product_name": "Cost Management On Premise"}, {"cpe": "cpe:/a:redhat:multicluster_globalhub", "fix_state": "Affected", "package_name": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9", "product_name": "Multicluster Global Hub"}, {"cpe": "cpe:/a:redhat:multicluster_globalhub:5", "fix_state": "Affected", "package_name": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9", "product_name": "Multicluster Global Hub 5"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Affected", "package_name": "rhacm2/acm-grafana-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Affected", "package_name": "rhacm2/acm-multicluster-observability-addon-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:ceph_storage:5", "fix_state": "Fix deferred", "package_name": "rhceph/rhceph-5-dashboard-rhel8", "product_name": "Red Hat Ceph Storage 5"}, {"cpe": "cpe:/a:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "grafana", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/a:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "osbuild-composer", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/a:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "grafana", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "osbuild-composer", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "grafana", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "osbuild-composer", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Affected", "package_name": "container-native-virtualization/hyperconverged-cluster-operator-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Affected", "package_name": "container-native-virtualization/hyperconverged-cluster-webhook-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:5", "fix_state": "Affected", "package_name": "container-native-virtualization/hyperconverged-cluster-operator-rhel9", "product_name": "Red Hat OpenShift Virtualization 5"}], "public_date": "2026-10-28T19:03:01Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-118264\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-118264\nhttps://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaaec\nhttps://github.com/labstack/echo/commit/3fb0ba7e17645bb65611e2a08875d0a2f65c421f\nhttps://github.com/labstack/echo/releases/tag/v4.16.1\nhttps://github.com/labstack/echo/releases/tag/v5.4.1\nhttps://github.com/labstack/echo/security/advisories/GHSA-cxf3-9h37-7rr8"], "statement": "A flaw was found in the Echo Go web framework's Proxy middleware. When processing a client WebSocket upgrade request, the middleware establishes a raw tunnel before verifying that the upstream server accepted the upgrade. If the upstream rejects the upgrade with a standard keep-alive response, subsequent HTTP requests over the existing connection bypass Echo's router and route-specific middleware, allowing unauthenticated or unauthorized access to upstream resources that rely solely on Echo for access control.", "threat_severity": "Moderate"}

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