CVE-2026-73268

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-12. A secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 9.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in the cluster-curator-controller component of multicluster engine (MCE). A tenant with create or update permissions on ClusterCurator resources can inject an arbitrary Job specification. This is possible because the CreateJob() function does not validate user-controlled input when unmarshaling the spec.install.overrideJob raw extension. Successful exploitation allows the injected Job to run with the controller's elevated privileges, leading to arbitrary code execution and privilege escalation, potentially accessing cluster-wide secrets.

CVSS v3
9.9
EG Score
9.9CRITICALmedium confidence
EG Risk
45
EG Risk 45/100CISA 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
Severity99% × 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
0.9%
EPSS %ILE
57th
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 12, 2026

Last Modified

September 29, 2026

Advisory Details (8)

Auto-updated Sep 29, 2026
Patch available. Sources: redhat.
redhat

2514219 – (CVE-2026-73268) CVE-2026-73268 cluster-curator-controller: cluster-curator-controller: spec.install.overrideJob allows arbitrary Job spec injection

https://bugzilla.redhat.com/show_bug.cgi?id=2514219
redhat Patch Available

CVE-2026-73268 - 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-2026-73268
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:59593
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-2026-73268(7)

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

Patch Availability(6)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatmulticluster-engine/cluster-curator-controller-rhel9:17872016122026-08-25redhat
redhatmulticluster-engine/cluster-curator-controller-rhel9:17872383832026-08-25redhat
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-rhel9:17867507002026-08-25redhat

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 54× in last 7d / 317× 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 556 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-73268?
CVE-2026-73268 is a critical vulnerability published on August 12, 2026. A flaw was found in the cluster-curator-controller component of multicluster engine (MCE). A tenant with create or update permissions on ClusterCurator resources can inject an arbitrary Job specification. This is possible because the CreateJob() function does not validate user-controlled input when…
When was CVE-2026-73268 disclosed?
CVE-2026-73268 was first published on August 12, 2026, with the most recent update on September 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73268 actively exploited?
CVE-2026-73268 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (57th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73268?
CVE-2026-73268 has a CVSS base score of 9.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73268?
A fix for CVE-2026-73268 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73268 are linked in the Vendor Advisories panel on this page.

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