CVE-2026-18678
Medium
Description
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.
SeverityMedium
CVSS5.5
Exploit probability—
ProductGithub.com/kumahq/kuma/v2
PublishedAug 12, 2026
First seenAug 12, 2026
Weakness typeCWE-295CWE-295
How to fix
Update
- github.com/kumahq/kuma/v22.7.26, 2.9.16, 2.11.14, 2.12.11, 2.13.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/kumahq/kuma/v2Go | v < 2.7.26, 2.8.0 ≤ v < 2.9.16, 2.10.0 ≤ v < 2.11.14, 2.12.0 ≤ v < 2.12.11, 2.13.0 ≤ v < 2.13.7, 2.9.13 ≤ v < 2.11.14, 2.12.4 ≤ v < 2.12.11 | 2.7.26, 2.9.16, 2.11.14, 2.12.11, 2.13.7 |
| github.com/kumahq/kumaGo | v ≤ 1.8.1, No range specified | — |
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