CVE-2026-16543

HighCVSS 7.1/10Last modified Jul 30, 2026

Description

Kong Operator's embedded Kong Kubernetes Ingress Controller (KIC) allows a user with namespace-scoped Secret creation privileges to cause a cluster-wide ingress configuration denial of service. The embedded 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.

Metrics

CVSS 4.0 7.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness enumeration

CWE-400 CWE-862

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
—	—	>= 2.2.0, < 2.2.3; >= 2.1.0, < 2.1.9; < 2.0.11

References

https://github.com/Kong/kong-operator/security/advisories/GHSA-h4fh-j7xg-vwcx

Timeline

Published: Jul 29, 2026
Last modified: Jul 30, 2026
NVD status: Awaiting Analysis

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