CVE-2026-18679mediumCWE-295

CVE-2026-18679: medium-severity vulnerability in Kong Mesh

Kong Mesh: kuma-dp connects to the control plane without verifying the TLS certificate when no CA is configured

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.8epss 0.2%
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.
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
Affected products
Kong Inc. · Kong Mesh
Related CVEs — Kong Mesh

In the same product, most dangerous first.

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