Console-operator: streams for apache kafka console: cross-namespace kafkauser secret exfiltration via confused deputy
Summary
| CVE | CVE-2026-105311 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-20 12:17:28 UTC |
| Updated | 2026-10-20 15:03:59 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 7.7 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Problem Types: CWE-441 | CWE-441 Unintended Proxy or Intermediary ('Confused Deputy')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.7 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| 3.1 | CNA | CVSS | 7.7 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
ChangedConfidentiality
HighIntegrity
NoneAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Red Hat | StreamsHub Console For Apache Kafka | affected 0.2.0 0.12.10 semver | Not specified |
| CNA | Red Hat | StreamsHub Console For Apache Kafka | affected 0.13.0 0.14.2 semver | Not specified |
| CNA | Red Hat | Streams For Apache Kafka 2 | Not specified | Not specified |
| CNA | Red Hat | Streams For Apache Kafka 3 | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| bugzilla.redhat.com/show_bug.cgi | [email protected] | bugzilla.redhat.com | |
| access.redhat.com/security/cve/CVE-2026-105311 | [email protected] | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-08-04T03:10:18.848Z | Reported to Red Hat. |
| CNA | 2026-10-20T11:00:00.000Z | Made public. |
Workarounds
CNA: 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.
There are currently no legacy QID mappings associated with this CVE.