What’s Vulnerable › Vulnerabilities

CVE-2026-18673: Kong Mesh: the kuma-dp readiness service exposes the Envoy admin API without authentication

• Severity: medium (CVSS 5.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-12 · updated 2026-10-23
• Weakness: CWE-200

Description

When kuma-dp is configured with the Envoy admin API on a Unix domain socket, which is the default, its readiness service on TCP port 9902 - bound to all interfaces - forwards almost the entire Envoy admin API to any caller that can reach the port, with no authentication. An attacker with network access to a data plane's port 9902, for example another pod on the cluster network, can read Envoy and data plane configuration without credentials: config dumps, cluster and listener lists, stats, and the mesh trust bundle. Exposure is read-only - destructive Envoy admin actions are blocked and private keys are not exposed.

Affected products

• Kong Inc. Kong Mesh: from 2.14.0 before 2.14.2 — fixed in 2.14.2

How to fix

Upgrade to a fixed version: Kong Inc. Kong Mesh 2.14.2. Check the vendor advisory for mitigations.

References

• https://developer.konghq.com/mesh/changelog/
• https://github.com/kumahq/kuma/pull/17317
• https://github.com/kumahq/kuma/pull/17418
• https://github.com/kumahq/kuma/security/advisories/GHSA-r9pv-x3pm-4r2w

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