Kong Mesh: kumactl connects to the control plane without verifying the TLS certificate when no CA is configured
When an operator adds an HTTPS control plane profile to kumactl without providing a CA certificate, kumactl disables TLS verification and sends API tokens over the unverified connection. An attacker on the network path between the operator and the control plane can intercept user or admin API tokens and then act against the control plane as that user.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-50166US | — | — | ||
Kuma is a modern Envoy-based service mesh that can run on every cloud across both Kubernetes and VMs. Prior to 2.7.26, 2.9.16, 2.11.14, 2.12.11, and 2.13.7, a kumactl profile manua… | ||||
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references
External citations — patches, advisories, analysis.
- https://developer.konghq.com/mesh/changelog/ADVISORY
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18678.jsonADVISORY
- https://github.com/kumahq/kuma/pull/16777FIX
- https://github.com/kumahq/kuma/security/advisories/GHSA-v95x-xhq5-4929ADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2026-18678ADVISORY
scry
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