CVE-2026-71577

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

Score 6.3 from GitHub Security Advisory published 2026-08-10. A secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this week
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in multicluster-global-hub. During a ManagedClusterMigration, the system incorrectly grants all managed hubs read access to a shared communication topic. This allows a compromised managed hub to intercept and collect sensitive bootstrap kubeconfigs, which contain API server tokens intended for other hubs. These tokens have an extended validity of approximately 9.86 years, significantly increasing the risk of unauthorized access and information disclosure to other managed clusters.

CVSS v3
6.3
EG Score
6.3MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA 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
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
34th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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 10, 2026

Last Modified

September 29, 2026

Advisory Details (2)

Auto-updated Aug 10, 2026
Patch available. Sources: redhat.
redhat

2512514 – (CVE-2026-71577) CVE-2026-71577 multicluster-global-hub: multicluster-global-hub: Spec-topic Read ACL leaks bootstrap kubeconfigs to all managed hubs during migration

https://bugzilla.redhat.com/show_bug.cgi?id=2512514
redhat Patch Available

CVE-2026-71577 - 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-2026-71577

Vendor Advisories for CVE-2026-71577(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-globalhub/multicluster-globalhub-rhel9-operator:17906383862026-09-29redhat
redhatmulticluster-globalhub/multicluster-globalhub-rhel9-operator:17900852682026-09-29redhat
redhatmulticluster-globalhub/multicluster-globalhub-rhel9-operator:17894788302026-09-24redhat
redhatmulticluster-globalhub/multicluster-globalhub-rhel9-operator:17883594612026-09-17redhat
redhatmulticluster-globalhub/multicluster-globalhub-rhel9-operator:17883724392026-09-16redhat
redhatmulticluster-globalhub/multicluster-globalhub-rhel9-operator:17883554172026-09-15redhat

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 26× in last 7d / 92× 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 164 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-71577?
CVE-2026-71577 is a medium vulnerability published on August 10, 2026. A flaw was found in multicluster-global-hub. During a ManagedClusterMigration, the system incorrectly grants all managed hubs read access to a shared communication topic. This allows a compromised managed hub to intercept and collect sensitive bootstrap kubeconfigs, which contain API server tokens…
When was CVE-2026-71577 disclosed?
CVE-2026-71577 was first published on August 10, 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-2026-71577 actively exploited?
CVE-2026-71577 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (34th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71577?
CVE-2026-71577 has a CVSS base score of 6.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-71577?
A fix for CVE-2026-71577 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-71577 are linked in the Vendor Advisories panel on this page.

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