CVE-2026-55226
mediumpriority · track · 0EPSS 0.003 · 16 %ileUSEPSS · scored 2026-10-28
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-r427-j2h7-wv3mStrimzi: Unrestricted access to all Secrets within namespace watched by the Topic operator2026-06-18ghsa · osvUS
### Impact When only the Topic or only the User operators are deployed as part of the Entity Operator in the `Kafka` custom resource, the RBAC rights are not following the principle of least-privilege and the Entity Operator ServiceAccount still has access rights corresponding to both operators. That might allow the ServiceAccount to access `KafkaUser` custom resources and Secrets when the User operator is not deployed and access `KafkaTopic` custom resources when the Topic operator is not deployed. ### Patches The issue is fixed in Strimzi 1.0.1 and 1.1.0. ### Workarounds There is no workaround for this issue.
sources
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references (6) nvd
External citations — patches, advisories, analysis.
- https://github.com/strimzi/strimzi-kafka-operator/commit/b3bfeffcc30754c3e62e6f4afd8a76942cac440d
- https://github.com/strimzi/strimzi-kafka-operator/commit/f6c5207ba7ec89b46ce6720b8638d647e556a261
- https://github.com/strimzi/strimzi-kafka-operator/pull/12844
- https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.0.1
- https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.1.0
- https://github.com/strimzi/strimzi-kafka-operator/security/advisories/GHSA-r427-j2h7-wv3m
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