CVE-2026-18677
Kong Mesh: a dataplane token without a workload binding can claim any workload's SPIFFE identity
- State
- Published
- Severity
- 6.0 Medium
- Published
- Aug 12, 2026
- Updated
- Aug 13, 2026
- Reserved
- Aug 3, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.0 Medium | 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 | Kong |
Weaknesses
- CWE-290 Authentication Bypass by Spoofing
Affected Products
| Product | Versions |
|---|---|
Kong MeshKong Inc. |
|
References
- Upstream advisory GHSA-744g-c785-x65qvendor-advisory
- kumahq/kuma#17474 (master)patch
- kumahq/kuma#17503 (release-2.13 backport)patch
- kumahq/kuma#17502 (release-2.14 backport)patch
- Kong MESH Changelogrelease-notes
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.