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Advisory severityCritical9.0Vendor: HighRed Hat Linux

Critical [CVE-2026-71471] Hub Search CR Collector.ImageOverride propagated to every spoke as arbitrary container image

This critical-severity Red Hat Linux advisory covers CVE-2026-71471 affecting Red Hat Advanced Cluster Management for Kubernetes 2.11, Red Hat Advanced Cluster Management for Kubernetes 2.13, Red Hat Advanced Cluster Management for Kubernetes 2.14.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-71471 Source published Source updated

VulniPulse record published Record updated

CVE-2026-71471
Affected products & platforms
Red Hat LinuxUnclassified
Open source advisory

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Summary

A flaw was found in acm-search-v2-rhel9. An attacker with administrative privileges on the hub cluster, specifically with patch access to the Search Custom Resource (CR), could exploit a vulnerability in the `Collector.

ImageOverride` field. This allows the attacker to deploy an arbitrary container image across all managed clusters.

The consequence is remote code execution (RCE), enabling the attacker to execute commands and potentially access sensitive information across the entire fleet of managed clusters. This is an Important vulnerability in Red Hat Advanced Cluster Management for Kubernetes.

This is due to the propagation of the `Collector. Red Hat severity: Important — CVSS 9 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L).

Weakness: CWE-829. Red Hat fixing advisory: RHSA-2026:60387, RHSA-2026:60390, RHSA-2026:60388, RHSA-2026:60389, RHSA-2026:60391, RHSA-2026:60386.

Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2.11; Red Hat Advanced Cluster Management for Kubernetes 2.13; Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Management for Kubernetes 2.15; and 2 more.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 23 days ago·verify at source

Fixed versions
  • rhacm2/acm-search-v2-rhel9:1787688827
  • rhacm2/acm-search-v2-rhel9:1787682112
  • rhacm2/acm-search-v2-rhel9:1787682033
  • rhacm2/acm-search-v2-rhel9:1787681674
  • rhacm2/acm-search-v2-rhel9:1787681686
  • rhacm2/acm-search-v2-rhel9:1787681651
  • RHSA-2026:60387
  • RHSA-2026:60390
  • RHSA-2026:60388
  • RHSA-2026:60389
  • RHSA-2026:60391
  • RHSA-2026:60386

Official advisory · high-confidence parse· fetched 23 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • To mitigate this issue, restrict patch access to the Search Custom Resource (CR) to only trusted and authorized hub administrators. This limits the ability of unauthorized principals to modify the `Collector.ImageOverride` field and deploy arbitrary container images across the managed fleet.

Official advisory · high-confidence parse· fetched 23 days ago·verify at source

Discussion(0)

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