Vulnerability · Published Oct 20, 2026 · Assigned by redhat

CVE-2026-105311Console-operator: streams for apache kafka console: cross-namespace kafkauser secret exfiltration via confused deputy

High 7.7

In plain English

A high-severity security flaw in streams for Apache Kafka 2 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.3%top 77.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Red Hat	StreamsHub Console for Apache Kafka®	0.2.0 – before 0.12.100.13.0 – before 0.14.2
Red Hat	streams for Apache Kafka 2	see references
Red Hat	streams for Apache Kafka 3	see references

Weakness: CWE-441 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

https://access.redhat.com/security/cve/CVE-2026-105311 vdb-entry, x_refsource_REDHAT
RHBZ#2510875 issue-tracking, x_refsource_REDHAT