CVE-2026-18675: Kong Mesh: control plane denial of service via a malformed dataplane token with a non-string JWT kid
Kong Inc. · Kong Mesh
Vendor fix available · Affected: Kong Inc. Kong Mesh · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 47% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Kong Inc. · Kong Meshbefore 2.7.29; from 2.8.0 before 2.9.19; from 2.10.0 before 2.11.18; from 2.12.0 before 2.12.14; from 2.13.0 before 2.13.10; from 2.14.0 before 2.14.2
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Kong Inc.
- Published
- August 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-18675 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.