CVE-2026-76827: Protection Mechanism Failure in Red Hat Red Hat Advanced Cluster Management for Kubernetes 2
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.
CVE-2026-76827: Protection Mechanism Failure in Red Hat Red Hat Advanced Cluster Management for Kubernetes 2
Description
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.
CVSS v3.1
Score 6.8medium
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-08-19T19:55:53.101Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-76827","vendor":"Red Hat"}]
Threat ID: 6a861b45acd9273b499fbb2f
Added to database: 08/19/2026, 21:08:21 UTC
Last updated: 08/19/2026, 21:08:21 UTC
Views: 1
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