CVE-2026-15228
High
Description
Kong Kubernetes Ingress Controller (KIC) allows a user with namespace-scoped Secret creation privileges to cause a cluster-wide ingress configuration denial of service. KIC collects CA-certificate Secrets across all watched namespaces using a label selector alone, without ingress-class or namespace restrictions. The CA-certificate primary key is derived from a user-supplied field in the Secret. Duplicate CA-certificate IDs cause Kong Gateway to reject the entire configuration document and halting all ingress changes cluster-wide.
SeverityHigh
CVSS7.1
Exploit probability—
ProductKong/kubernetes-ingress-controller
PublishedJul 29, 2026
First seenJul 29, 2026
How to fix
Update
- Kong/kubernetes-ingress-controller3.4.18, 3.5.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Kong/kubernetes-ingress-controller | 3.4.0 ≤ v < 3.4.18, 3.5.0 ≤ v < 3.5.11 | 3.4.18, 3.5.11 |
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