CVE-2026-71576

HIGHPre-NVD 8.58.5—
EchelonGraph scoreHIGH 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(high)
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 27× in last 7d / 45× 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.

  1. 2026-08-21 02:52 UTCEG score recompute
  2. 2026-08-21 02:52 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 14:17 UTCGHSA enrichment
  5. 2026-08-20 01:11 UTCEG score recompute
  6. 2026-08-20 01:11 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 12:36 UTCGHSA enrichment
  9. 2026-08-19 00:01 UTCGHSA enrichment
  10. 2026-08-18 11:25 UTCGHSA enrichment
  11. 2026-08-17 22:50 UTCEG score recompute
  12. 2026-08-17 22:50 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 10:14 UTCGHSA enrichment
  15. 2026-08-16 21:40 UTCEG score recompute
  16. 2026-08-16 21:40 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 09:05 UTCEG score recompute
  20. 2026-08-16 09:05 UTCGHSA enrichment
  21. 2026-08-16 02:15 UTCEPSS rescore
  22. 2026-08-15 20:30 UTCGHSA enrichment
  23. 2026-08-15 07:55 UTCEG score recompute
  24. 2026-08-15 07:55 UTCGHSA enrichment
  25. 2026-08-15 01:31 UTCEPSS rescore
Show 20 more
  1. 2026-08-14 19:19 UTCGHSA enrichment
  2. 2026-08-14 18:56 UTCGHSA enrichment
  3. 2026-08-14 06:20 UTCEG score recompute
  4. 2026-08-14 06:20 UTCGHSA enrichment
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-13 17:45 UTCGHSA enrichment
  7. 2026-08-13 05:10 UTCGHSA enrichment
  8. 2026-08-12 16:35 UTCEG score recompute
  9. 2026-08-12 16:35 UTCGHSA enrichment
  10. 2026-08-12 16:04 UTCEG score recompute
  11. 2026-08-12 16:03 UTCGHSA enrichment
  12. 2026-08-12 13:51 UTCEPSS rescore
  13. 2026-08-12 07:07 UTCGHSA enrichment
  14. 2026-08-11 18:32 UTCEG score recompute
  15. 2026-08-11 18:32 UTCGHSA enrichment
  16. 2026-08-11 05:57 UTCEG score recompute
  17. 2026-08-11 05:57 UTCGHSA enrichment
  18. 2026-08-10 17:22 UTCEG score recompute
  19. 2026-08-10 16:50 UTCEG score recompute
  20. 2026-08-10 16:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

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 97.6% 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

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