PT-2026-71206 · Kuma-Cp · Kuma-Cp
CVE-2026-18675
·
Published
2026-08-12
·
Updated
2026-08-12
CVSS v4.0
5.3
Medium
| Vector | AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/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 |
Name of the Vulnerable Software and Affected Versions
kuma-cp (affected versions not specified)
Description
The dataplane token validator in kuma-cp performs an unchecked Go type assertion on the JWT
kid header. If a token is provided where the kid is a JSON number, it decodes as a float64, triggering a runtime panic before signature, claims, or authorization checks are executed. This panic terminates the entire kuma-cp process, including the HTTP API, xDS, and health and readiness endpoints. Unauthenticated access to the dataplane gRPC server can be used to trigger this crash via a malformed token. While a single request causes a transient interruption, repeated requests can sustain a denial of service outage.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Incorrect Type Conversion or Cast
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Related Identifiers
Affected Products
Kuma-Cp