Description
The StreamsHub Console operator acts as a confused deputy: a Kubernetes tenant with permission to create a Console custom resource can set spec.kafkaClusters[].credentials.kafkaUser.namespace to any namespace. The operator, running with cluster-wide Secrets RBAC, reads the victim-namespace KafkaUser Secret (SASL credentials or TLS private keys) and writes the plaintext material into a Secret in the attacker's namespace. No same-namespace check or allowlist exists anywhere in the code path.
Published: 2026-10-20
Score: 7.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

1. Restrict Console CR RBAC — remove create/update verbs on consoles.console.streamshub.github.com from tenant-facing roles. Only trusted cluster administrators should manage Console CRs. 2. Audit existing Console CRs — review all Console CRs for kafkaUser.namespace fields pointing outside the CR's own namespace. 3. Network policy (defense-in-depth) — apply NetworkPolicy to restrict operator pod egress.

Tracking

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Advisories

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History

Tue, 20 Oct 2026 12:45:00 +0000

Type Values Removed Values Added
Description The StreamsHub Console operator acts as a confused deputy: a Kubernetes tenant with permission to create a Console custom resource can set spec.kafkaClusters[].credentials.kafkaUser.namespace to any namespace. The operator, running with cluster-wide Secrets RBAC, reads the victim-namespace KafkaUser Secret (SASL credentials or TLS private keys) and writes the plaintext material into a Secret in the attacker's namespace. No same-namespace check or allowlist exists anywhere in the code path.
Title Console-operator: streams for apache kafka console: cross-namespace kafkauser secret exfiltration via confused deputy
First Time appeared Redhat
Redhat amq Streams
Weaknesses CWE-441
CPEs cpe:/a:redhat:amq_streams:2
cpe:/a:redhat:amq_streams:3
Vendors & Products Redhat
Redhat amq Streams
References
Metrics cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'}


Subscriptions

Redhat Amq Streams
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-20T11:30:09.568Z

Reserved: 2026-10-05T07:03:59.012Z

Link: CVE-2026-105311

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T12:17:28.550

Modified: 2026-10-20T15:03:59.857

Link: CVE-2026-105311

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-20T14:30:14Z

Weaknesses