CVE-2026-16242

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM 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 — 4 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: 1%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(medium)
EG Risk
58(Track)
EG Risk 58/100SSVC: 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%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
54%
KEV
Not listed

Published

July 20, 2026

Last Modified

September 8, 2026

Advisory Details (13)

Auto-updated Sep 8, 2026
Patch available. Sources: redhat.
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:48670
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:48657
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:48284
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:47974
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:47953
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:47949
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:47735
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:47728
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:47388
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:46885
github_pr

OCPBUGS-99014: Authenticate Konnectivity agents with cluster CA

Fix merged in openshift/hypershift PR #9031 on 2026-07-23 — awaiting tagged release

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(17)

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

Patch Availability(15)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatopenshift4/ose-hypershift-rhel9:17870551322026-08-26redhat
redhatopenshift4/ose-hypershift-rhel8:17870016902026-08-26redhat
redhatopenshift4/ose-hypershift-rhel9:17855344282026-08-12redhat
redhatopenshift4/ose-hypershift-rhel9:17849148692026-08-06redhat
redhatopenshift4/ose-hypershift-rhel9:17849128822026-08-05redhat
redhatopenshift4/ose-hypershift-rhel9:17849137202026-08-05redhat
redhatopenshift4/ose-hypershift-rhel9:17851929362026-08-04redhat
redhatopenshift4/ose-hypershift-rhel9:17852888432026-08-04redhat
redhatopenshift4/ose-hypershift-rhel9:17853019412026-08-04redhat
redhatmulticluster-engine/hypershift-rhel9-operator:17849057832026-07-29redhat
redhatmulticluster-engine/hypershift-rhel9-operator:17849058042026-07-29redhat
redhatmulticluster-engine/hypershift-rhel9-operator:17848569422026-07-29redhat
redhatmulticluster-engine/hypershift-rhel9-operator:17849057692026-07-29redhat
redhatmulticluster-engine/hypershift-rhel9-operator:17849459662026-07-29redhat
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 85× in last 7d / 387× 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.

Showing the most recent 100 of 712 total refreshes for this CVE.

  1. 2026-09-11 18:33 UTCEG score recompute
  2. 2026-09-11 18:33 UTCVendor advisory
  3. 2026-09-11 18:33 UTCGHSA enrichment
  4. 2026-09-11 14:52 UTCEPSS rescore
  5. 2026-09-11 09:36 UTCEPSS rescore
  6. 2026-09-11 09:33 UTCEG score recompute
  7. 2026-09-11 09:33 UTCVendor advisory
  8. 2026-09-11 09:33 UTCGHSA enrichment
  9. 2026-09-10 09:34 UTCEPSS rescore
  10. 2026-09-09 12:13 UTCEG score recompute
  11. 2026-09-09 12:13 UTCVendor advisory
  12. 2026-09-09 12:13 UTCGHSA enrichment
  13. 2026-09-08 22:00 UTCEPSS rescore
  14. 2026-09-08 20:25 UTCEG score recompute
  15. 2026-09-08 20:25 UTCVendor advisory
  16. 2026-09-08 20:24 UTCGHSA enrichment
  17. 2026-09-08 16:14 UTCVendor advisory
  18. 2026-09-08 16:13 UTCGHSA enrichment
  19. 2026-09-08 12:38 UTCEG score recompute
  20. 2026-09-08 12:38 UTCVendor advisory
  21. 2026-09-08 12:38 UTCGHSA enrichment
  22. 2026-09-08 11:46 UTCVendor advisory
  23. 2026-09-08 11:46 UTCGHSA enrichment
  24. 2026-09-08 10:59 UTCVendor advisory
  25. 2026-09-08 10:59 UTCGHSA enrichment
Show 75 more
  1. 2026-09-08 10:30 UTCVendor advisory
  2. 2026-09-08 10:30 UTCGHSA enrichment
  3. 2026-09-08 09:43 UTCEG score recompute
  4. 2026-09-08 09:43 UTCVendor advisory
  5. 2026-09-08 09:43 UTCGHSA enrichment
  6. 2026-09-08 03:10 UTCVendor advisory
  7. 2026-09-08 03:10 UTCGHSA enrichment
  8. 2026-09-07 23:18 UTCVendor advisory
  9. 2026-09-07 23:18 UTCGHSA enrichment
  10. 2026-09-07 19:26 UTCEG score recompute
  11. 2026-09-07 19:26 UTCVendor advisory
  12. 2026-09-07 19:26 UTCGHSA enrichment
  13. 2026-09-07 18:30 UTCEG score recompute
  14. 2026-09-07 18:30 UTCVendor advisory
  15. 2026-09-07 18:30 UTCGHSA enrichment
  16. 2026-09-07 16:01 UTCEPSS rescore
  17. 2026-09-06 18:21 UTCEG score recompute
  18. 2026-09-06 18:21 UTCVendor advisory
  19. 2026-09-06 18:21 UTCGHSA enrichment
  20. 2026-09-06 17:19 UTCVendor advisory
  21. 2026-09-06 17:19 UTCGHSA enrichment
  22. 2026-09-06 16:39 UTCEG score recompute
  23. 2026-09-06 16:39 UTCVendor advisory
  24. 2026-09-06 16:39 UTCGHSA enrichment
  25. 2026-09-06 15:54 UTCEG score recompute
  26. 2026-09-06 15:54 UTCVendor advisory
  27. 2026-09-06 15:54 UTCGHSA enrichment
  28. 2026-09-06 13:47 UTCEPSS rescore
  29. 2026-09-06 11:51 UTCVendor advisory
  30. 2026-09-06 11:51 UTCGHSA enrichment
  31. 2026-09-06 04:14 UTCVendor advisory
  32. 2026-09-06 04:14 UTCGHSA enrichment
  33. 2026-09-05 23:46 UTCVendor advisory
  34. 2026-09-05 23:46 UTCGHSA enrichment
  35. 2026-09-05 19:52 UTCEG score recompute
  36. 2026-09-05 19:52 UTCVendor advisory
  37. 2026-09-05 19:52 UTCGHSA enrichment
  38. 2026-09-05 15:21 UTCVendor advisory
  39. 2026-09-05 15:21 UTCGHSA enrichment
  40. 2026-09-05 14:19 UTCEG score recompute
  41. 2026-09-05 14:19 UTCVendor advisory
  42. 2026-09-05 14:19 UTCGHSA enrichment
  43. 2026-09-05 13:45 UTCEG score recompute
  44. 2026-09-05 13:45 UTCVendor advisory
  45. 2026-09-05 13:45 UTCGHSA enrichment
  46. 2026-09-05 13:23 UTCEG score recompute
  47. 2026-09-05 13:23 UTCVendor advisory
  48. 2026-09-05 13:23 UTCGHSA enrichment
  49. 2026-09-05 12:45 UTCEG score recompute
  50. 2026-09-05 12:45 UTCVendor advisory
  51. 2026-09-05 12:44 UTCGHSA enrichment
  52. 2026-09-05 12:22 UTCEG score recompute
  53. 2026-09-05 12:22 UTCVendor advisory
  54. 2026-09-05 12:22 UTCGHSA enrichment
  55. 2026-09-05 11:58 UTCEG score recompute
  56. 2026-09-05 11:58 UTCVendor advisory
  57. 2026-09-05 11:58 UTCGHSA enrichment
  58. 2026-09-05 09:39 UTCEG score recompute
  59. 2026-09-05 09:39 UTCVendor advisory
  60. 2026-09-05 09:39 UTCGHSA enrichment
  61. 2026-09-04 05:06 UTCEPSS rescore
  62. 2026-09-02 14:11 UTCEPSS rescore
  63. 2026-09-01 13:53 UTCEPSS rescore
  64. 2026-09-01 04:39 UTCEPSS rescore
  65. 2026-08-31 03:17 UTCVendor advisory
  66. 2026-08-31 03:17 UTCGHSA enrichment
  67. 2026-08-30 23:17 UTCVendor advisory
  68. 2026-08-30 23:17 UTCGHSA enrichment
  69. 2026-08-30 19:23 UTCEG score recompute
  70. 2026-08-30 19:23 UTCVendor advisory
  71. 2026-08-30 19:23 UTCGHSA enrichment
  72. 2026-08-30 19:17 UTCEPSS rescore
  73. 2026-08-30 15:32 UTCVendor advisory
  74. 2026-08-30 15:32 UTCGHSA enrichment
  75. 2026-08-30 10:56 UTCVendor advisory

Related CVEs(same vendor + same CWE)

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 September 8, 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 1% probability of exploitation in the next 30 days, which ranks it in the top 45.6% 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

Explore the affected products and dependency analysis for CVE-2026-16242

Explore →

Is Your Infrastructure Affected by CVE-2026-16242?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs