---
id: CVE-2026-55226
title: >-
  Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or
  OpenShift in various deployment configurations
summary: >-
  Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or
  OpenShift in various deployment configurations. In Strimzi 1.0.0 and earlier,
  deploying only the Topic Operator or only the User Operator through the Kafka
  custom res…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N'
cwe:
  - CWE-269
  - CWE-272
vendor: strimzi
product: strimzi-kafka-operator
affected:
  - strimzi-kafka-operator < 1.0.1
patched:
  - 'io.strimzi:strimzi 1.0.1'
published: '2026-09-15'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T16:17:09.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55226'
references:
  - url: >-
      https://github.com/strimzi/strimzi-kafka-operator/commit/b3bfeffcc30754c3e62e6f4afd8a76942cac440d
    label: security-advisories@github.com
  - url: >-
      https://github.com/strimzi/strimzi-kafka-operator/commit/f6c5207ba7ec89b46ce6720b8638d647e556a261
    label: security-advisories@github.com
  - url: 'https://github.com/strimzi/strimzi-kafka-operator/pull/12844'
    label: security-advisories@github.com
  - url: 'https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.0.1'
    label: security-advisories@github.com
  - url: 'https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.1.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/strimzi/strimzi-kafka-operator/security/advisories/GHSA-r427-j2h7-wv3m
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-r427-j2h7-wv3m'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-55226.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-55226'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2490660'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-55226'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55226'
tags:
  - nvd
  - cve.org
  - ghsa
  - maven
  - csaf
  - vex
  - red-hat
ecosystem: maven
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-16T15:02:43.140179Z'
ingestedAt: '2026-06-29T14:31:47.013Z'
epss: 0.0025
epssPercentile: 0.14587
---

## Overview

Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or OpenShift in various deployment configurations. In Strimzi 1.0.0 and earlier, deploying only the Topic Operator or only the User Operator through the Kafka custom resource leaves the Entity Operator ServiceAccount with RBAC permissions for both components. The excess permissions can allow access to KafkaUser custom resources and Secrets when the User Operator is absent, or access to KafkaTopic custom resources when the Topic Operator is absent. This issue is fixed in versions 1.0.1 and 1.1.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-55226)

Affected packages:

- `io.strimzi:strimzi <= 1.0.0`

Patched in:

- `io.strimzi:strimzi 1.0.1`

Source: https://github.com/advisories/GHSA-r427-j2h7-wv3m

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: streams for Apache Kafka 2, streams for Apache Kafka 3 · no fix planned: streams for Apache Kafka 2, streams for Apache Kafka 3 · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-55226.json)