CVE-2026-76827Search-indexer: search-indexer: update/delete operations not scoped to caller's cluster (cross-tenant data tampering)
Updated under an hour ago ()
Does this affect you?
It affects Red Hat Advanced Cluster Management for Kubernetes 2.11. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 6.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N
- Weakness (CWE)
- CWE-693
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
from 1787688957 not affected | CNA record |
References
- https://access.redhat.com/errata/RHSA-2026:60386vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60387vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60388vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60389vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60390vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60391vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-76827vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2519896issue-tracking, x-refsource-redhat
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.