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CVE-2026-62246— Kamaji: TenantControlPlane namespace/name collision binds two tenants to the same SQL datastore schema + DB user, breaking per-tenant isolation

Quick assessment

Affected
clastix kamaji
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kamaji 是 Kubernetes 的托管控制平面管理器。在 26.7.4-edge 版本之前，Kamaji 通过 和 函数，使用一种有损的命名空间与名称规范化过程来派生 TenantControlPlane 的数据存储模式、数据库用户以及 etcd 键前缀。这种有损规范化可能导致不同的租户在规范化的标识符发生冲突时，共享控制平面状态，从而能够读取、修改或销毁其他租户的 Kubernetes 数据。该问题已在 26.7.4-edge 版本中得到修复。

CVSS 8.5 · High EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
clastix kamaji < 26.7.4-edge affected
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I. Basic Information for CVE-2026-62246

Vulnerability Information
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Vulnerability Title
Kamaji: TenantControlPlane namespace/name collision binds two tenants to the same SQL datastore schema + DB user, breaking per-tenant isolation
Source: CVE Program / CVE List V5
Vulnerability Description
Kamaji is the Hosted Control Plane Manager for Kubernetes. Prior to 26.7.4-edge, Kamaji derives a TenantControlPlane datastore schema, database user, and etcd key prefix from a lossy namespace-and-name normalization in GetDefaultDatastoreSchema() and GetDefaultDatastoreUsername(), allowing distinct tenants with colliding normalized identifiers to share control-plane state and read, modify, or destroy another tenant's Kubernetes data. This issue is fixed in version 26.7.4-edge.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
clastix kamaji < 26.7.4-edge -

II. Public POCs for CVE-2026-62246

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7566 chars
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III. Intelligence Information for CVE-2026-62246

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Patches & Fixes for CVE-2026-62246 (1)

Vendor Advisories for CVE-2026-62246 (1)

IV. Related Vulnerabilities

Same product: kamaji
Same vendor: clastix
Same weakness: CWE-284

V. Comments for CVE-2026-62246

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