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CVE-2026-71576— Multicluster-global-hub: multicluster-global-hub: manager trusts self-asserted evt.source() for leaf-hub identity in all status handlers

Quick assessment

Affected
Red Hat Multicluster Global Hub 1.4.9
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Red Hat Multicluster Global Hub是美国Red Hat公司的一款信息化产品。 Red Hat Multicluster Global Hub 存在输入验证错误漏洞，该漏洞源于manager组件对Kafka状态主题上传入的CloudEvents源身份验证不当，远程攻击者可伪造或删除数据库中属于其他hub的合规性和集群健康信息等关键数据。

CVSS 8.5 · High EPSS 0.29% · P20

Affected Version Matrix 6

VendorProduct Version RangeStatus
Red Hat Multicluster Global Hub 1.4.9 1788355599< * unaffected
Red Hat Multicluster Global Hub 1.5.8 1789515288< * unaffected
Red Hat Multicluster Global Hub 1.6.6 1790086176< * unaffected
Red Hat Multicluster Global Hub 1.7.3 1788377424< * unaffected
Red Hat Multicluster Global Hub 1.8.2 1788359454< * unaffected
1788359454< * unaffected
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I. Basic Information for CVE-2026-71576

Vulnerability Information
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Vulnerability Title
Multicluster-global-hub: multicluster-global-hub: manager trusts self-asserted evt.source() for leaf-hub identity in all status handlers
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat Multicluster Global Hub 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Multicluster Global Hub是美国Red Hat公司的一款信息化产品。 Red Hat Multicluster Global Hub 存在输入验证错误漏洞，该漏洞源于manager组件对Kafka状态主题上传入的CloudEvents源身份验证不当，远程攻击者可伪造或删除数据库中属于其他hub的合规性和集群健康信息等关键数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Multicluster Global Hub 1.4.9 1788355599 ~ * cpe:/a:redhat:multicluster_globalhub:1.4::el9
Red Hat Multicluster Global Hub 1.5.8 1789515288 ~ * cpe:/a:redhat:multicluster_globalhub:1.5::el9
Red Hat Multicluster Global Hub 1.6.6 1790086176 ~ * cpe:/a:redhat:multicluster_globalhub:1.6::el9
Red Hat Multicluster Global Hub 1.7.3 1788377424 ~ * cpe:/a:redhat:multicluster_globalhub:1.7::el9
Red Hat Multicluster Global Hub 1.8.2 1788359454 ~ * cpe:/a:redhat:multicluster_globalhub:1.8::el9
Red Hat Multicluster Global Hub 1.8.2 1788359454 ~ * cpe:/a:redhat:multicluster_globalhub:1.8::el9

II. Public POCs for CVE-2026-71576

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III. Intelligence Information for CVE-2026-71576

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Vendor Advisories for CVE-2026-71576 (8)

Same Patch Batch · Red Hat · 2026-08-10 · 28 CVEs total

CVE-2026-18948 9.9 CRITICAL Feast: feast: unsafe dill deserialization of registry-stored udfs — rce on feature server
CVE-2026-14450 9.9 CRITICAL Maas-billing: maas api: privilege escalation via forged http headers due to missing authen
CVE-2026-18982 8.8 HIGH Odh-training-operator-rhel9: rhoai fork aggregates training job create onto native edit/ad
CVE-2026-18950 8.8 HIGH Odh-dashboard: odh-dashboard: confused-deputy privilege escalation via unchecked roleref i
CVE-2026-18949 8.8 HIGH Odh-dashboard: odh-dashboard: clusterrole grants cluster-wide crud on secrets and rbac man
CVE-2026-18951 8.8 HIGH Odh-training-operator-rhel9: [trainer v2 security] trn-02: rhoai overlay aggregates trainj
CVE-2026-18617 8.8 HIGH Data-science-pipelines-operator: dspo: mysql dsn parameter injection via customextraparams
CVE-2026-18608 8.7 HIGH Data-science-pipelines-operator: dspo: operator clusterrole grants pods/exec:*, kubeflow.o
CVE-2026-18947 8.5 HIGH Feast: feast: authorization bypass in /materialize endpoints enables dos via unauthorized
CVE-2026-15467 8.1 HIGH Trustyai-service-operator: trustyai-service-operator: lmevaljob sidecar containers bypass
CVE-2026-15581 8.0 HIGH Trustyai-service-operator: trustyai-service-operator: tas internal service bypasses kube-r
CVE-2026-63622 7.8 HIGH Libvirt: swtpm privilege escalation via symlink following
CVE-2026-18941 7.7 HIGH Feast: feast-operator: feast: default authentication mode is no_auth — shared multi-tenant
CVE-2026-18621 7.6 HIGH Data-sciences-pipeline: dsp: v1 argo template path accepts arbitrary workflow spec, bypass
CVE-2026-19387 7.6 HIGH Gstreamer: gstreamer1-plugins-bad-free: gstreamer: heap out-of-bounds write in adpcmdec im
CVE-2026-18611 7.5 HIGH Data-science-pipelines-operator: dspo: cryptographically weak secret generation (math/rand
CVE-2026-18618 7.5 HIGH Ml-metdata: bundled grpc 1.46.3 (2022) with published http/2 dos cves — directly reachable
CVE-2026-19389 7.1 HIGH Gstreamer: gstreamer1-plugins-ugly-free: gstreamer: integer overflow/underflow in asfdemux
CVE-2026-18620 7.1 HIGH Data-sciences-pipeline: user-controlled serviceaccount for workflow pods without authoriza
CVE-2026-19278 6.8 MEDIUM Stackrox: stackrox: privilege escalation via unanchored regular expressions in auth m2m ro

Showing top 20 of 28 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Multicluster Global Hub 1.4.9
Same vendor: Red Hat
Same weakness: CWE-345

V. Comments for CVE-2026-71576

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