CVE-2026-10059

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-05. A secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in the Multicluster Engine for Kubernetes ClusterCurator controller. A tenant administrator with namespace-scoped privileges can exploit this vulnerability by creating a namespaced ClusterCurator. This action inadvertently grants the tenant administrator the ability to mint a token for a ServiceAccount with cluster-wide administrative authority. This leads to a privilege escalation, allowing the tenant administrator to gain full control over the cluster.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
41
EG Risk 41/100CISA SSVC

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
Severity91% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
48th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 5, 2026

Last Modified

September 8, 2026

Advisory Details (7)

Auto-updated Sep 15, 2026
Patch available. Sources: redhat.
redhat

2483187 – (CVE-2026-10059) CVE-2026-10059 cluster-curator-controller: cluster-curator-controller: namespace admin can escalate to cluster-wide curator authority via ClusterCurator ServiceAccount token

https://bugzilla.redhat.com/show_bug.cgi?id=2483187
redhat Patch Available

CVE-2026-10059 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-10059
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:59579
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:59559
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:59558
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:59557
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:59556

Vendor Advisories for CVE-2026-10059(6)

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

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatmulticluster-engine/cluster-curator-controller-rhel9:17872016122026-08-25redhat
redhatmulticluster-engine/cluster-curator-controller-rhel9:17872641852026-08-25redhat
redhatmulticluster-engine/cluster-curator-controller-rhel9:17872590112026-08-25redhat
redhatmulticluster-engine/cluster-curator-controller-rhel9:17872016462026-08-25redhat
redhatmulticluster-engine/cluster-curator-controller-rhel9:17872383832026-08-25redhat

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 34× in last 7d / 258× 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 532 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-10059?
CVE-2026-10059 is a critical vulnerability published on August 5, 2026. A flaw was found in the Multicluster Engine for Kubernetes ClusterCurator controller. A tenant administrator with namespace-scoped privileges can exploit this vulnerability by creating a namespaced ClusterCurator. This action inadvertently grants the tenant administrator the ability to mint a token…
When was CVE-2026-10059 disclosed?
CVE-2026-10059 was first published on August 5, 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-2026-10059 actively exploited?
CVE-2026-10059 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (48th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-10059?
CVE-2026-10059 has a CVSS base score of 9.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-10059?
A fix for CVE-2026-10059 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-10059 are linked in the Vendor Advisories panel on this page.

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