CVE-2026-18677
mediumpriority · track · 0EPSS 0.004 · 36 %ileEUEPSS · scored 2026-10-23
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.3–6
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (16)
External citations — patches, advisories, analysis.
- https://developer.konghq.com/mesh/changelog/cnnvd
- https://github.com/kumahq/kuma/pull/17474cnnvd
- https://github.com/kumahq/kuma/pull/17502cnnvd
- https://github.com/kumahq/kuma/pull/17503cnnvd
- https://github.com/kumahq/kuma/releasesPatchcnnvd
- https://github.com/kumahq/kuma/security/advisories/GHSA-744g-c785-x65qcnnvd
- https://developer.konghq.com/mesh/changelog/enisa_euvd
- https://github.com/kumahq/kuma/pull/17474enisa_euvd
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