Bug 2510875 (CVE-2026-105311)

Summary:	CVE-2026-105311 console-operator: Streams for Apache Kafka Console: cross-namespace KafkaUser Secret exfiltration via confused deputy
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	chfoley, jturenov, rgodfrey, security-response-team, swoodman
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	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.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Deadline:	2026-10-20

Description OSIDB Bzimport 2026-08-04 03:12:30 UTC

Source: Internal security audit — Streams for Apache Kafka Console f002
Upstream project: StreamsHub Console (Red Hat-owned, github.com/streamshub/console)
Upstream advisory: N/A — Red Hat-owned code, no external disclosure needed

Affected code:
- ConfigurationProcessor.java — setKafkaUserConfig() accepts tenant-controlled namespace without validation
- CredentialsKafkaUser.java — namespace field is plain String with no validation
- ConsoleSecret.java — writes exfiltrated credentials to attacker's namespace
- ClusterRole grants unrestricted cluster-wide Secrets CRUD

Fix status: Unfixed in upstream main (bfc823f) and all downstream versions. Requires assertNamespaceAllowed() guard with same-namespace default.

Comment 1 Jon Orris 2026-10-21 07:34:10 UTC

This issue has been addressed in the following products:

  Streams for Apache Kafka 3.2.2

Via RHSA-2026:86676 https://access.redhat.com/errata/RHSA-2026:86676