Answer in brief
CVE-2026-18675 records a Unknown severity vulnerability in Kong Mesh: control plane denial of service via a malformed dataplane token with a non-string JWT kid. The current sources do not mark it as known exploited. The current feed maps Kong Inc./Kong Mesh (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-18675 records a Unknown severity vulnerability in Kong Mesh: control plane denial of service via a malformed dataplane token with a non-string JWT kid. The current sources do not mark it as known exploited. The current feed maps Kong Inc./Kong Mesh (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Kong Inc./Kong Mesh (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Kong Inc./Kong Meshgeneric | >=0 <2.7.29 || >=2.8.0 <2.9.19 || >=2.10.0 <2.11.18 || >=2.12.0 <2.12.14 || >=2.13.0 <2.13.10 || >=2.14.0 <2.14.2 | 2.7.29, 2.9.19, 2.11.18, 2.12.14, 2.13.10, 2.14.2 |
Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 12, 2026
The dataplane token validator in kuma-cp performs an unchecked Go type assertion on the JWT kid header. A token whose kid is a JSON number decodes as a float64 and triggers a runtime panic before any signature, claims, or authorization check runs. The panic terminates the entire kuma-cp process, HTTP API, the health and readiness endpoints, and xDS. Unauthenticated access to the dataplane gRPC server can trigger the crash with a malformed token A single request is a transient interruption; sustaining an outage requires repeated requests.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Kong Inc./Kong Mesh (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Kong Inc./Kong Meshgeneric | >=0 <2.7.29 || >=2.8.0 <2.9.19 || >=2.10.0 <2.11.18 || >=2.12.0 <2.12.14 || >=2.13.0 <2.13.10 || >=2.14.0 <2.14.2 | 2.7.29, 2.9.19, 2.11.18, 2.12.14, 2.13.10, 2.14.2 |
Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 12, 2026
The dataplane token validator in kuma-cp performs an unchecked Go type assertion on the JWT kid header. A token whose kid is a JSON number decodes as a float64 and triggers a runtime panic before any signature, claims, or authorization check runs. The panic terminates the entire kuma-cp process, HTTP API, the health and readiness endpoints, and xDS. Unauthenticated access to the dataplane gRPC server can trigger the crash with a malformed token A single request is a transient interruption; sustaining an outage requires repeated requests.
Quoted source text, attributed separately from HOL analysis.