Releases — RATATOSK

Strimzi0.45.2Networking & MessagingMar 12, 2026

ACTION 8CHECK 1PLAN 3OTHER 5View full analysis

A maintenance release that narrows Kubernetes support to version 1.25 and newer and marks several older Kafka and extension components for removal. It adds Kafka 3.9.2 support and includes dependency updates addressing multiple CVEs and a GHSA advisory.

Action needed (8)

securityhighGRPC Netty Shaded update for CVE-2025-55163
GRPC Netty Shaded was upgraded to remediate CVE-2025-55163.
securitymediumZookeeper update for CVE-2024-47554
The Zookeeper dependency was upgraded to remediate CVE-2024-47554.
securitymediumNimbus Jose JWT 10.0.2 update for CVE-2025-53864
Nimbus Jose JWT was upgraded to version 10.0.2 to remediate CVE-2025-53864.
securitymediumNetty 4.1.130.Final update for CVE-2025-67735
Netty was updated to version 4.1.130.Final to resolve CVE-2025-67735.
securitymediumApache Log4J 2.25.3 update for CVE-2025-68161
Apache Log4J was updated to version 2.25.3 to remediate CVE-2025-68161.
securitymediumVertx 4.5.24 update for CVE-2026-1002
Vertx was updated to version 4.5.24 to remediate CVE-2026-1002.
securitymediumJackson update for GHSA-72hv-8253-57qq
Jackson was updated to address GHSA-72hv-8253-57qq.
securityVert.x and Netty dependency updates
The Vert.x and Netty dependencies were bumped on the 0.45.x branch to fix CVEs.

Check if affected (1)

breakingKubernetes support narrowed to 1.25 and newer
Applies if you use Kubernetes 1.23 or Kubernetes 1.24.
Strimzi 0.45 supports only Kubernetes 1.25 and newer. Kubernetes 1.23 and Kubernetes 1.24 are no longer supported.

Plan ahead (3)

breakingStrimzi MirrorMaker 2 Extensions deprecationdeprecated since 0.28.0 · removal planned in 0.46
Applies if you use the Strimzi MirrorMaker 2 Extensions.
The Strimzi MirrorMaker 2 Extensions were deprecated in Strimzi 0.28.0.
breakingStrimzi EnvVar Configuration Provider inclusiondeprecated since 0.38.0 · removal planned in 0.46
Applies if you use the Strimzi EnvVar Configuration Provider.
Strimzi 0.45 is the last version to include the Strimzi EnvVar Configuration Provider, which was deprecated in Strimzi 0.38.0. The provider is removed in Strimzi 0.46.
deprecatedZooKeeper-based Kafka and MirrorMaker 1 supportremoval planned in 0.46
Applies if you use ZooKeeper-based Apache Kafka clusters or MirrorMaker 1 deployments.
Strimzi 0.45 is the last minor version with support for ZooKeeper-based Apache Kafka clusters and MirrorMaker 1 deployments. This support is removed in Strimzi 0.46.

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Strimzi0.51.0Networking & MessagingMar 6, 2026

ACTION 2CHECK 2PLAN 1OTHER 2View full analysis

A release with fixes for two disclosed security vulnerabilities, updated Kubernetes and Kafka support, and a changed feature-gate default. It also adds Kafka 4.2.0 support and per-listener Kafka options, while the ingress listener type is deprecated; CRD upgrades and a KafkaUser field migration are upgrade prerequisites.

Action needed (2)

securityhighCVE-2026-27133 and CVE-2026-27134 security fixes
Security fixes in Strimzi 0.50.1 and 0.51.0 address CVE-2026-27133 and CVE-2026-27134, with advisories GHSA-2qwx-rq6j-8r6j and GHSA-6x85-j2f7-4xc5.
breakingThe ServerSideApplyPhase1 feature gate default
The ServerSideApplyPhase1 feature gate moved to beta and is enabled by default.

Check if affected (2)

breakingKubernetes version support
Applies if you use Kubernetes 1.27, 1.28, or 1.29.
Support is limited to Kubernetes 1.30 and newer. Kubernetes 1.27, 1.28, and 1.29 are no longer supported.
breakingKafka 4.0.0 and 4.0.1 support
Applies if you use Kafka 4.0.0 or 4.0.1.
Support for Kafka 4.0.0 and 4.0.1 is removed.

Plan ahead (1)

deprecatedThe ingress listener type deprecation
Applies if you configure the ingress listener type.
The ingress listener type is deprecated because the Ingress NGINX Controller for Kubernetes was archived.

Source ↗