Releases

AI-analyzed release notes for CNCF graduated and incubating projects.

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Mar 2026Clear ×

Emissary-Ingressv4.0.1Networking & MessagingMar 26, 2026

ACTION 1CHECK 6OTHER 14View full analysis

A release with operator-facing compatibility changes, including feature removals, aligned chart and application versions, GHCR-only chart distribution, and a changed CRD conversion-webhook default. It also updates dependencies and the Python interpreter to resolve CVEs, with additional defect fixes and new service and architecture capabilities.

Action needed (1)

securityDependency and Python interpreter updates for CVE fixes
Many dependencies and the Python interpreter were updated to resolve CVEs.

Check if affected (6)

breakingCustom error responses and header-case mangling, removed
Applies if you use Ambassador Edge Stack's custom error responses or header-case mangling features.
breakingHelm chart and Emissary version alignment
Applies if you use the Helm chart.
breakingGHCR-only Helm chart distribution
Applies if you use Emissary's Helm charts.
+ 3 more on the release page

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gRPCv1.80.0Networking & MessagingMar 26, 2026

CHECK 1OTHER 8View full analysis

This release adds TLS, certificate, xDS, and C++ credential capabilities, and changes EventEngine defaults and support. It also corrects an OpenBSD sizing defect and changes RR and WRR connection behavior.

Check if affected (1)

breakingEventEngine defaults and fork support
Applies if you use Python or Ruby.

Source ↗

NATSv2.12.6Networking & MessagingMar 24, 2026

ACTION 1CHECK 13OTHER 36View full analysis

A maintenance release with multiple security fixes, tighter JWT and MQTT-related enforcement, and dependency manifest updates. It also includes correctness fixes and improvements across networking, monitoring, clustering, and JetStream.

Action needed (1)

breakingJWT size limit
JWTs now have a 1MB size limit.

Check if affected (13)

securityhighMQTT security fixes
Applies if you use MQTT.
securityhighLeafnode security fix
Applies if you use leafnodes.
securityhighCommand-line credential security fix
Applies if you provide credentials on the command line.
+ 10 more on the release page

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NATSv2.11.15Networking & MessagingMar 24, 2026

ACTION 1CHECK 11OTHER 22View full analysis

A maintenance release with multiple disclosed security fixes, correctness fixes, stricter validation and permission constraints, and dependency and toolchain updates. It also includes fixes across MQTT, JetStream, leafnodes, WebSockets, monitoring, and clustering.

Action needed (1)

breakingThe JWT size limit
JWTs now have a 1MB size limit.

Check if affected (11)

securityhighCVE-2026-33216, CVE-2026-33217, and CVE-2026-33215 fixes for MQTT systems
Applies if you use MQTT.
securityhighCVE-2026-33218 fix for leafnodes
Applies if you use leafnodes.
securityhighCVE-2026-33247 fix for command-line credentials
Applies if you configure credentials on the command line.
+ 8 more on the release page

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Contourv1.33.3Networking & MessagingMar 23, 2026

ACTION 2CHECK 1OTHER 1View full analysis

A maintenance release with security-related dependency updates and removal of the hostPort setting from example manifests. It also documents compatibility testing with Kubernetes 1.32 through 1.34.

Action needed (2)

securitycriticalgoogle.golang.org/grpc v1.79.3 update
google.golang.org/grpc is updated to v1.79.3, which addresses CVE-2026-33186 and GHSA-p77j-4mvh-x3m3. Contour is not affected by this advisory.
securityEnvoy v1.35.9 update
The Envoy dependency is updated to v1.35.9 to address security vulnerabilities.

Check if affected (1)

breakingRemoval of hostPort: 8002 from example manifests
Applies if you use hostPort in example manifests.

Source ↗

Contourv1.32.4Networking & MessagingMar 23, 2026

ACTION 2CHECK 1OTHER 1View full analysis

A maintenance release with updated Envoy and gRPC dependencies, plus a change to the example manifests. It is tested against Kubernetes 1.31 through 1.33.

Action needed (2)

securitycriticalgoogle.golang.org/grpc updated to v1.79.3
google.golang.org/grpc is updated to v1.79.3, which addresses CVE-2026-33186 and GHSA-p77j-4mvh-x3m3. Contour is not affected.
securityEnvoy updated to v1.34.13
Envoy is updated to v1.34.13 to address security vulnerabilities and improve stability.

Check if affected (1)

breakinghostPort: 8002 removed from example manifests
Applies if hostPort: 8002 is configured in example manifests.

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Contourv1.31.5Networking & MessagingMar 23, 2026

ACTION 2CHECK 1OTHER 1View full analysis

A maintenance release contains dependency security updates and an example-manifest cleanup. It also documents testing against Kubernetes 1.30 through 1.32.

Action needed (2)

securitycriticalgoogle.golang.org/grpc updated to v1.79.3 for CVE-2026-33186
The release updates google.golang.org/grpc to v1.79.3, which addresses CVE-2026-33186 and GHSA-p77j-4mvh-x3m3. Contour is not affected.
securityEnvoy updated to v1.34.13
The release bumps Envoy to v1.34.13.

Check if affected (1)

breakingEnvoy metrics hostPort: 8002 removed from example manifests
Applies if example manifests use hostPort: 8002.

Source ↗

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.

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.
breakingStrimzi EnvVar Configuration Provider inclusiondeprecated since 0.38.0 · removal planned in 0.46
Applies if you use the Strimzi EnvVar Configuration Provider.
deprecatedZooKeeper-based Kafka and MirrorMaker 1 supportremoval planned in 0.46
Applies if you use ZooKeeper-based Apache Kafka clusters or MirrorMaker 1 deployments.

Source ↗

Linkerdedge-26.3.2Networking & MessagingMar 12, 2026

CHECK 1OTHER 25View full analysis

This release narrows Linkerd Viz scraping behavior and adds the inbound_http_request_duration_seconds and inbound_grpc_request_duration_seconds metrics histograms. It also updates dependencies and ships proxy v2.342.0.

Check if affected (1)

breakingLinkerd Viz default scraping configuration
Applies if you use Linkerd Viz.

Source ↗

NATSv2.12.5Networking & MessagingMar 9, 2026

CHECK 3OTHER 65View full analysis

A maintenance release with fixes for two CVEs, many correctness issues, expanded JetStream configuration capabilities, and dependency updates. Operators of clustered deployments should review the documented regression affecting stream updates and the changed max_conns behavior.

Check if affected (3)

securityCVE-2026-29785 fix for leafnode compression
Applies if leafnode compression is enabled.
securityCVE-2026-27889 fix for WebSockets
Applies if WebSockets are enabled.
breakingThe max_conns server configuration value
Applies if you configure max_conns in the server configuration.

Source ↗

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.
breakingKafka 4.0.0 and 4.0.1 support
Applies if you use Kafka 4.0.0 or 4.0.1.

Plan ahead (1)

deprecatedThe ingress listener type deprecation
Applies if you configure the ingress listener type.

Source ↗

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