Search-Indexer Vulnerability in Red Hat Managed Clusters
CVE-2026-76827

6.8MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Advanced Cluster Management For Kubernetes 2
Vendor
CVE Published:
19 August 2026

What is CVE-2026-76827?

A critical flaw exists in the search-indexer component of Red Hat Managed Clusters, enabling authenticated users to manipulate or erase indexed search data from other clusters. This vulnerability arises due to improper restrictions in the delta-sync write paths, which fail to enforce owner permissions on UPDATE and DELETE operations. As a result, an attacker may exploit this flaw by generating user identifiers (UIDs) that correspond to a different cluster, allowing unauthorized access to sensitive data.

References

https://access.redhat.com/security/cve/CVE-2026-76827
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2519896
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.