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 — Patch released 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

A fix is available — apply it.

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
30%
KEV
Not listed

Published

July 20, 2026

Last Modified

July 29, 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(4)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatmulticluster-engine/hypershift-rhel9-operator:17849057662026-07-28redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 53× in last 7d / 64× 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. 2026-07-29 10:31 UTCEG score recompute
  2. 2026-07-29 10:31 UTCVendor advisory
  3. 2026-07-29 10:31 UTCGHSA enrichment
  4. 2026-07-29 09:29 UTCEG score recompute
  5. 2026-07-29 09:29 UTCVendor advisory
  6. 2026-07-29 09:29 UTCGHSA enrichment
  7. 2026-07-29 06:11 UTCVendor advisory
  8. 2026-07-29 06:11 UTCGHSA enrichment
  9. 2026-07-29 02:20 UTCVendor advisory
  10. 2026-07-29 02:20 UTCGHSA enrichment
  11. 2026-07-28 22:27 UTCEG score recompute
  12. 2026-07-28 22:27 UTCVendor advisory
  13. 2026-07-28 22:27 UTCGHSA enrichment
  14. 2026-07-28 21:56 UTCEG score recompute
  15. 2026-07-28 21:56 UTCVendor advisory
  16. 2026-07-28 21:56 UTCGHSA enrichment
  17. 2026-07-28 19:02 UTCEG score recompute
  18. 2026-07-28 19:02 UTCVendor advisory
  19. 2026-07-28 19:01 UTCGHSA enrichment
  20. 2026-07-28 15:07 UTCVendor advisory
  21. 2026-07-28 15:07 UTCGHSA enrichment
  22. 2026-07-28 11:14 UTCVendor advisory
  23. 2026-07-28 11:14 UTCGHSA enrichment
  24. 2026-07-28 07:22 UTCVendor advisory
  25. 2026-07-28 07:22 UTCGHSA enrichment
Show 39 more
  1. 2026-07-28 03:12 UTCVendor advisory
  2. 2026-07-28 03:12 UTCGHSA enrichment
  3. 2026-07-27 23:19 UTCGHSA enrichment
  4. 2026-07-27 19:10 UTCGHSA enrichment
  5. 2026-07-27 15:13 UTCEG score recompute
  6. 2026-07-27 15:13 UTCGHSA enrichment
  7. 2026-07-27 14:13 UTCEPSS rescore
  8. 2026-07-27 10:02 UTCGHSA enrichment
  9. 2026-07-27 06:11 UTCGHSA enrichment
  10. 2026-07-27 02:19 UTCGHSA enrichment
  11. 2026-07-26 22:26 UTCGHSA enrichment
  12. 2026-07-26 18:35 UTCEG score recompute
  13. 2026-07-26 18:34 UTCGHSA enrichment
  14. 2026-07-26 14:54 UTCEPSS rescore
  15. 2026-07-26 14:54 UTCEPSS rescore
  16. 2026-07-26 14:41 UTCGHSA enrichment
  17. 2026-07-26 10:49 UTCEG score recompute
  18. 2026-07-26 10:49 UTCGHSA enrichment
  19. 2026-07-26 04:30 UTCEG score recompute
  20. 2026-07-26 04:30 UTCGHSA enrichment
  21. 2026-07-25 14:17 UTCEPSS rescore
  22. 2026-07-25 14:17 UTCEPSS rescore
  23. 2026-07-24 14:17 UTCEPSS rescore
  24. 2026-07-23 14:18 UTCEPSS rescore
  25. 2026-07-23 03:05 UTCEG score recompute
  26. 2026-07-22 23:49 UTCEG score recompute
  27. 2026-07-22 23:49 UTCGHSA enrichment
  28. 2026-07-22 14:08 UTCEPSS rescore
  29. 2026-07-21 15:24 UTCEPSS rescore
  30. 2026-07-20 17:08 UTCEPSS rescore
  31. 2026-07-20 16:47 UTCEG score recompute
  32. 2026-07-20 16:47 UTCGHSA enrichment
  33. 2026-07-20 15:00 UTCEG score recompute
  34. 2026-07-20 14:59 UTCGHSA enrichment
  35. 2026-07-20 13:02 UTCEG score recompute
  36. 2026-07-20 13:02 UTCGHSA enrichment
  37. 2026-07-20 08:35 UTCEG score recompute
  38. 2026-07-20 08:12 UTCEG score recompute
  39. 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 29, 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 70.2% 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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