Hypershift: konnectivity proxy-server accepts agent connections without validating client certificates
CVSS score
9.4
EPSS probability
%0.9
Risk score
0.1
Published
3 mo ago
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Impact on My Inventory
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Vulnerability description
DayBreach CVE AI Research
CVE-2026-16242 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
A flaw was found in the Konnectivity proxy-server configuration for hosted control planes. The agent-facing listener was started without --cluster-ca-cert (and without token-based agent authentication), so client certificates were not validated. A remote attacker who can reach the Konnectivity cluster endpoint could connect as an unauthenticated agent, join the routing pool, and potentially proxy, inspect, modify, or drop control-plane-to-node traffic.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-16242 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Red Hat | multicluster engine for Kubernetes 2.1 | View |
| 2 | Red Hat | multicluster engine for Kubernetes 2.11 | View |
| 3 | Red Hat | multicluster engine for Kubernetes 2.17 | View |
| 4 | Red Hat | multicluster engine for Kubernetes 2.6 | View |
| 5 | Red Hat | multicluster engine for Kubernetes 2.8 | View |
| 6 | Red Hat | multicluster engine for Kubernetes 2.9 | View |
| 7 | Red Hat | Red Hat OpenShift Container Platform 4.14 | View |
| 8 | Red Hat | Red Hat OpenShift Container Platform 4.15 | View |
| 9 | Red Hat | Red Hat OpenShift Container Platform 4.16 | View |
| 10 | Red Hat | Red Hat OpenShift Container Platform 4.17 | View |
| 11 | Red Hat | Red Hat OpenShift Container Platform 4.18 | View |
| 12 | Red Hat | Red Hat OpenShift Container Platform 4.19 | View |
| 13 | Red Hat | Red Hat OpenShift Container Platform 4.20 | View |
| 14 | Red Hat | Red Hat OpenShift Container Platform 4.21 | View |
| 15 | Red Hat | Red Hat OpenShift Container Platform 4.22 | View |
| 16 | Red Hat | Logging Subsystem for Red Hat OpenShift | View |
| 17 | Red Hat | Multicluster Engine for Kubernetes | View |
| 18 | Red Hat | OpenShift API for Data Protection | View |
| 19 | Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 | View |
| 20 | Red Hat | Red Hat OpenShift Container Platform 4 | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 9.4 | CVSS V31 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L | NVD |
| 9.4 | CVSS V3_1 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L | CVE CNA |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-16242 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-16242 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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