CVE-2026-18679
Published:August 12, 2026
Updated:September 01, 2026
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.
Affected Packages
https://github.com/kumahq/kuma.git (GITHUB):
Affected version(s) >=v2.13.0 <v2.13.7Fix Suggestion:
Update to version v2.13.7https://github.com/kumahq/kuma.git (GITHUB):
Affected version(s) >=v2.7.20 <v2.7.26Fix Suggestion:
Update to version v2.7.26https://github.com/kumahq/kuma.git (GITHUB):
Affected version(s) >=v2.11.8 <v2.11.14Fix Suggestion:
Update to version v2.11.14https://github.com/kumahq/kuma.git (GITHUB):
Affected version(s) >=v2.12.4 <v2.12.11Fix Suggestion:
Update to version v2.12.11Related Resources (7)
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Contact UsCVSS v4
Base Score:
5.8
Attack Vector
ADJACENT
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
8.3
Attack Vector
ADJACENT
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Certificate Validation
EPSS
Base Score:
0.12