CVE-2026-71576

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

Score 8.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. a secondary CVSS source baseline 8.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A flaw was found in multicluster-global-hub. The manager component improperly validates the source identity of incoming CloudEvents on Kafka status topics. A remote attacker, after compromising a managed hub and obtaining its Kafka client certificate, can manipulate the self-asserted source identity. This allows the attacker to falsify or delete critical data, such as compliance, inventory, and cluster health information, belonging to other hubs in the database.

CVSS v3
8.5
EG Score
8.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity85% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 14, 2026

Advisory Details (2)

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

2512513 – (CVE-2026-71576) CVE-2026-71576 multicluster-global-hub: multicluster-global-hub: Manager trusts self-asserted evt.Source() for leaf-hub identity in all status handlers

https://bugzilla.redhat.com/show_bug.cgi?id=2512513
redhat Patch Available

CVE-2026-71576 - 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-2026-71576

Vendor Advisories for CVE-2026-71576(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 95× 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 138 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-71576?
CVE-2026-71576 is a high vulnerability published on August 10, 2026. A flaw was found in multicluster-global-hub. The manager component improperly validates the source identity of incoming CloudEvents on Kafka status topics. A remote attacker, after compromising a managed hub and obtaining its Kafka client certificate, can manipulate the self-asserted source…
When was CVE-2026-71576 disclosed?
CVE-2026-71576 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71576 actively exploited?
CVE-2026-71576 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 97.7% of all scored CVEs.
What is the CVSS score of CVE-2026-71576?
CVE-2026-71576 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2026-71576?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71576, 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-2026-71576

Explore →

Is Your Infrastructure Affected by CVE-2026-71576?

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

Start Free Scan →Browse All CVEs