CVE-2026-71471

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.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.111787688827 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.131787682112 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.141787682033 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.151787681674 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.161787681686 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.171787681651 < *unaffected

Weaknesses

  • CWE-829: Inclusion of Functionality from Untrusted Control Sphere

Workarounds

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.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References