CVE-2026-18677
MediumCVSS 6.0Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
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.
Risk Assessment
An attacker can impersonate another workload and gain unauthorized access to resources, potentially compromising integrity and confidentiality.
Recommendation
Configure the requirement for token binding to a workload or otherwise secure label validation.
Original NVD description (English source)
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.