CVE-2026-16242

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreHIGH confidence

Score 9.4 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-20. a secondary CVSS source baseline 9.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.4
EG Score
9.4(high)
EG Risk
57(Track)
EG Risk 57/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity94% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

July 20, 2026

Last Modified

July 27, 2026

Advisory Details (3)

Auto-updated Jul 20, 2026
Patch available. Sources: redhat, github_pr.
github_pr

OCPBUGS-99014: Authenticate Konnectivity agents with cluster CA

Upstream fix in progress (PR #9031 · openshift/hypershift, state=open)

https://github.com/openshift/hypershift/pull/9031
redhat

2502690 – (CVE-2026-16242) CVE-2026-16242 hypershift: Konnectivity proxy-server accepts agent connections without validating client certificates

https://bugzilla.redhat.com/show_bug.cgi?id=2502690
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-16242

Vendor Advisories for CVE-2026-16242(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 27× in last 7d / 37× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-27 23:19 UTCGHSA enrichment
  2. 2026-07-27 19:10 UTCGHSA enrichment
  3. 2026-07-27 15:13 UTCEG score recompute
  4. 2026-07-27 15:13 UTCGHSA enrichment
  5. 2026-07-27 14:13 UTCEPSS rescore
  6. 2026-07-27 10:02 UTCGHSA enrichment
  7. 2026-07-27 06:11 UTCGHSA enrichment
  8. 2026-07-27 02:19 UTCGHSA enrichment
  9. 2026-07-26 22:26 UTCGHSA enrichment
  10. 2026-07-26 18:35 UTCEG score recompute
  11. 2026-07-26 18:34 UTCGHSA enrichment
  12. 2026-07-26 14:54 UTCEPSS rescore
  13. 2026-07-26 14:54 UTCEPSS rescore
  14. 2026-07-26 14:41 UTCGHSA enrichment
  15. 2026-07-26 10:49 UTCEG score recompute
  16. 2026-07-26 10:49 UTCGHSA enrichment
  17. 2026-07-26 04:30 UTCEG score recompute
  18. 2026-07-26 04:30 UTCGHSA enrichment
  19. 2026-07-25 14:17 UTCEPSS rescore
  20. 2026-07-25 14:17 UTCEPSS rescore
  21. 2026-07-24 14:17 UTCEPSS rescore
  22. 2026-07-23 14:18 UTCEPSS rescore
  23. 2026-07-23 03:05 UTCEG score recompute
  24. 2026-07-22 23:49 UTCEG score recompute
  25. 2026-07-22 23:49 UTCGHSA enrichment
Show 12 more
  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:24 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
  4. 2026-07-20 16:47 UTCEG score recompute
  5. 2026-07-20 16:47 UTCGHSA enrichment
  6. 2026-07-20 15:00 UTCEG score recompute
  7. 2026-07-20 14:59 UTCGHSA enrichment
  8. 2026-07-20 13:02 UTCEG score recompute
  9. 2026-07-20 13:02 UTCGHSA enrichment
  10. 2026-07-20 08:35 UTCEG score recompute
  11. 2026-07-20 08:12 UTCEG score recompute
  12. 2026-07-20 08:12 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-16242?
CVE-2026-16242 is a critical vulnerability published on July 20, 2026. 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…
When was CVE-2026-16242 disclosed?
CVE-2026-16242 was first published in the National Vulnerability Database on July 20, 2026, with the most recent update on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16242 actively exploited?
CVE-2026-16242 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 70.7% of all scored CVEs.
What is the CVSS score of CVE-2026-16242?
CVE-2026-16242 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2026-16242?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16242, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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