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Fencer Intel
high 7.7

CVE-2026-105311 json

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

published 20d ago modified 6d ago also EUVD-2026-104963

cvss
7.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

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.

Patch / fix

  • Red Hat StreamsHub Console for Apache Kafka® 0.12.10, 0.14.2

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-105311 updated cvss 7.7

console-operator: Streams for Apache Kafka Console: cross-namespace KafkaUser Secret exfiltration via confused deputy

  • Red Hat streams for Apache Kafka 3 console-operator 0.12.5.streams-2-9-redhat-00001
    affected: workaround, no fix available
  • Red Hat streams for Apache Kafka 2 console-operator 0.12.5.streams-2-9-redhat-00001
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
19d ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected products

  • Red Hat StreamsHub Console for Apache Kafka®
  • Red Hat streams for Apache Kafka 2
  • Red Hat streams for Apache Kafka 3

Classification

Weakness
  • CWE-441 Unintended Proxy or Intermediary

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.