CVE-2026-16543
Last modified
CVE-2026-16543 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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.
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/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
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| — | — | >= 2.2.0, < 2.2.3; >= 2.1.0, < 2.1.9; < 2.0.11 |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-16543?
How severe is CVE-2026-16543?
How do I fix CVE-2026-16543?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-1651The Email Subscribers by Icegram Express plugin for WordPres…6.5
- CVE-2026-16517A signed integer overflow vulnerability was found in libarch…2.9
- CVE-2026-16519A DLL hijacking vulnerability exists in the GeoVision GV-IP …7.3
- CVE-2026-1652A potential buffer overflow vulnerability was reported in th…6.9
- CVE-2026-1653A potential divide by zero vulnerability was reported in the…6.8
- CVE-2026-1654The Peter's Date Countdown plugin for WordPress is vulnerabl…6.1
- CVE-2026-16544A flaw was found in AWX. The websocket event consumer perfor…6.5
- CVE-2026-1655The EventPrime plugin for WordPress is vulnerable to unautho…4.3
- CVE-2026-16551Denial-of-Service in Thinkst Applied Research OpenCanary (Mo…6.9
- CVE-2026-16552Rejected reason: The reported issue is invalid, as it requir…
- CVE-2026-16553GitLab has remediated an issue in GitLab EE affecting all ve…5.4
- CVE-2026-16554cJSON library is vulnerable to an integer overflow in the pr…5.1
Are you affected by CVE-2026-16543?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST