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Vulnerabilities CVE-2026-18677

CVE-2026-18677

Medium
Open
TLP:CLEAR

Kong Mesh: a dataplane token without a workload binding can claim any workload's SPIFFE identity

AI Analysis

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Description

In Kong Mesh running in universal mode with a MeshIdentity whose SPIFFE ID path template derives from the dataplane's kuma.io/workload label, the XDS authenticator in kuma-cp validates that label only when the dataplane token is bound to a workload. Workload binding is optional, so a dataplane presenting a tags-bound token can register with kuma.io/workload set to any value and obtain another workload's SPIFFE identity.

Details

CVSS Score
6.0
EPSS Score
0.31%

23.9th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
Aug 12, 2026
Last Modified
Aug 13, 2026
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