What is CVE-2026-27134?

CVE-2026-27134 is a high-severity vulnerability in Strimzi Strimzi-kafka-operator, classified under Improper Authentication. CVSS score: 8.1/10. Published 2026-02-20.

How severe is CVE-2026-27134?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Strimzi Strimzi-kafka-operator

CVE-2026-27134

Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or OpenShift in various deployment configurations. In versions 0.49.0 through 0.50.0, when using a custom Cluster or Clients CA with a multistage CA chain consisting of m…

Vulnerability class: Broken Authentication

EPSS: 0.000 (5.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Strimzi Strimzi-kafka-operator — versions >= 0.49.0, < 0.50.1

Weakness classification (CWE)

References

https://github.com/strimzi/strimzi-kafka-operator/security/advisories/GHSA-2qwx-rq6j-8r6j (x_refsource_CONFIRM)
https://github.com/strimzi/strimzi-kafka-operator/releases/tag/0.50.1 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-27134?: CVE-2026-27134 is a high-severity vulnerability in Strimzi Strimzi-kafka-operator, classified under Improper Authentication. CVSS score: 8.1/10. Published 2026-02-20.
How severe is CVE-2026-27134?: High severity. CVSS v3 base score is 8.1 out of 10.