CVE-2026-18679

Published: Aug 12, 2026Modified: Aug 31, 2026

5.8

Vector

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb (Secondary)

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.

Related CWEs

CWE-295

Improper Certificate Validation

The product does not validate, or incorrectly validates, a certificate.

References (3)

https://developer.konghq.com/mesh/changelog/

Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb

https://github.com/kumahq/kuma/pull/16777

Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb

https://github.com/kumahq/kuma/security/advisories/GHSA-wvmp-6r4v-j6cv

Source: 02762ae7-200e-4b20-9b2b-a77d5b8fc4cb

Timeline

No history available yet.