CVE-2026-18679
Medium
Description
When kuma-dp is started against an HTTPS control plane and the operator did not pass a CA certificate, the data plane connects with TLS peer verification disabled, and the dataplane authentication token is sent over that unverified connection. An on-path actor can intercept the dataplane authentication token and impersonate the control plane to the data plane, injecting a forged bootstrap configuration and taking over the proxy.
SeverityMedium
CVSS5.8
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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