CVE-2026-76827

Summary

A flaw was found in search-indexer. This vulnerability allows a registered and authenticated managed cluster to tamper with or delete another cluster's indexed search data. This is possible because the delta-sync write paths in search-indexer do not properly restrict UPDATE/DELETE operations to data owned by the calling cluster. An attacker could exploit this by crafting specific user identifiers (UIDs) with a different cluster's prefix.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.111787688957 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.131787262474 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.141787250074 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.151787249293 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.161787248491 < *unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.171787247085 < *unaffected

Weaknesses

  • CWE-693: Protection Mechanism Failure

Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

ADP Enrichment

CISA ADP Vulnrichment

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

References