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Fencer Vulns
medium 5.4

CVE-2026-55226 json

Strimzi: Unrestricted access to all Secrets within namespace watched by the Topic operator

published 2026-06-18 4 mo ago modified 2026-09-30 39 d ago also EUVD-2026-78880 , GHSA-r427-j2h7-wv3m

cvss
5.4
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 16%
public exploits
0
none known

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 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.

Patch / fix

  • maven io.strimzi:strimzi 1.0.1
  • io.strimzi strimzi 1.0.1
  • linuxfoundation strimzi_kafka_operator 1.0.1

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-2026-55226 updated cvss 5.4

strimzi-cluster-operator: Unrestricted access to all Secrets within namespace watched by the Topic operator in Strimzi

  • Red Hat streams for Apache Kafka 2 cluster-operator Red Hat streams for Apache Kafka 3 cluster-operator
    affected: no fix available “Fix deferred”

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
54 d ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
GitHub 3.1 5.4 CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven io.strimzi:strimzi
<1.0.1
1.0.1

Affected products

  • strimzi strimzi-kafka-operator

Classification

Weakness
  • CWE-269 Improper Privilege Management
  • CWE-272 Least Privilege Violation

References

Sources

Fencer Vulns 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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.