CVE-2025-24030: Envoy Admin Interface Exposed through prometheus metrics endpoint
Impact A user with access to a Kubernetes cluster where Envoy Gateway is installed can use a path traversal attack to execute Envoy Admin interface commands on proxies managed by Envoy Gateway. The admin interface can be used to terminate the Envoy process and extract the Envoy configuration (possibly containing confidential data).
For example, the following command, if run from within the Kubernetes cluster, can be used to get the configuration dump of the proxy: curl --path-as-is http://<Proxy-Service-ClusterIP>:19001/stats/prometheus/../../configdump Patches 1.2.6
Workarounds The EnvoyProxy API can be used to apply a bootstrap config patch that restricts access strictly to the prometheus stats endpoint. Find below an example of such a bootstrap patch.
apiVersion: gateway.envoyproxy.io/v1alpha1 kind: EnvoyProxy metadata: name: custom-proxy-config namespace: default spec: bootstrap: type: JSONPatch jsonPatches: - op: "add" path: "/staticresources/listeners/0/filterchains/0/filters/0/typedconfig/normalizepath" value: true - op: "replace" path: "/staticresources/listeners/0/filterchains/0/filters/0/typedconfig/routeconfig/virtualhosts/0/routes/0/match" value: path: "/stats/prometheus" headers: - name: ":method" exactmatch: GET
References - Envoy Admin Interface: https://www.envoyproxy.io/docs/envoy/latest/operations/admin - Envoy Configuration Best Practices: https://www.envoyproxy.io/docs/envoy/latest/configuration/bestpractices/edge
Other sources
Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. A user with access to the Kubernetes cluster can use a path traversal attack to execute Envoy Admin interface commands on proxies managed by any version of Envoy Gateway prior to 1.2.6. The admin interface can be used to terminate the Envoy process and extract the Envoy configuration (possibly containing confidential data). Version 1.2.6 fixes the issue. As a workaround, the EnvoyProxy API can be used to apply a bootstrap config patch that restricts access strictly to the prometheus stats endpoint. Find below an example of such a bootstrap patch.
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2025-24030?
The vulnerability CVE-2025-24030 is considered high severity due to its potential impact on the Envoy Admin interface.
How do I fix CVE-2025-24030?
To mitigate CVE-2025-24030, users should upgrade Envoy Gateway to version 1.2.6 or later.
What type of attack does CVE-2025-24030 enable?
CVE-2025-24030 enables a path traversal attack that allows unauthorized access to Envoy Admin interface commands.
Who is affected by CVE-2025-24030?
Any user with access to a Kubernetes cluster running an affected version of Envoy Gateway is at risk with CVE-2025-24030.
What can an attacker do with CVE-2025-24030?
An attacker exploiting CVE-2025-24030 can terminate the Envoy process and extract sensitive information from the Envoy configuration.