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Releases

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

Sep 2026Clear ×
Ciliumv1.19.8Networking & MessagingTodaySep 16, 2026

A maintenance release focused on correctness fixes and dependency updates, with a small number of new extension points. It does not introduce broad operator-facing configuration changes.

Action needed (1)

  • breakingRemoval of the Ingress HostFW Policy between RevSNAT and RevDNAT

    The BPF NodePort path removes the Ingress HostFW Policy between RevSNAT and RevDNAT.

Source
Ciliumv1.18.14Networking & MessagingTodaySep 16, 2026

A maintenance release focused on bug fixes, dependency updates, and image refreshes. It also removes a datapath behavior and includes security dependency fixes that may require operator attention.

Action needed (3)

  • securityThe google.golang.org/grpc module, updated to v1.83.1

    The google.golang.org/grpc module is updated to v1.83.1 in this release as a security dependency fix.

  • securityThe google.golang.org/grpc module, updated to v1.83.2

    The google.golang.org/grpc module is updated to v1.83.2 in this release as a security dependency fix.

  • breakingThe Ingress HostFW Policy between RevSNAT and RevDNAT, removed

    The Ingress HostFW Policy between RevSNAT and RevDNAT is removed in this release.

Source
Backstagev1.55.0CI/CD & App DeliveryYesterdaySep 15, 2026

A broad feature and maintenance release adds scaffolder recovery and credential controls, TechDocs, notification and streaming capabilities, and Kubernetes and authentication improvements. It also includes dependency and tooling security updates, a security fix, and compatibility changes that affect users of the listed resolvers, catalog integrations, MCP configuration, and task recovery.

Action needed (6)

  • securityModule Federation dependency updates for security

    This release updates the Module Federation dependencies to versions that avoid known security vulnerabilities.

  • securityYarn tooling dependency updates for security

    This release updates the Yarn tooling dependencies to versions that avoid known security vulnerabilities.

  • securityModule Federation security dependency update

    This release updates the Module Federation dependencies to versions that avoid known security vulnerabilities.

  • securityOpenAPI generator tooling security update

    This release updates the OpenAPI generator tooling to avoid known security vulnerabilities.

  • securityOpenAPI generator tooling security update

    This release updates the OpenAPI generator tooling to avoid known security vulnerabilities.

  • breakingLocale-insensitive Unicode casing

    String handling now uses locale-insensitive Unicode casing for consistent results across environments.

Check if affected (6)

  • securityKubernetes catalog cluster locator URL validation

    Applies if you use the catalog cluster locator.

  • securityPull request workspace handling security fix

    Applies if you use pull request workspace handling.

  • breakingGitHub user ID catalog lookup matching

    Applies if you use GitHub user ID catalog lookups.

  • + 3 more on the release page

Plan ahead (1)

  • deprecatedGitHub username sign-in resolver deprecation

    Applies if you use the GitHub username sign-in resolver.

Source
CRI-Ov1.37.0Kubernetes CoreYesterdaySep 15, 2026

A substantial feature and compatibility release for operators, with changed defaults and interfaces alongside correctness and performance improvements. It also includes identified security fixes and refreshes a broad set of dependencies.

Action needed (2)

  • securityhighThe CVE-2026-15809 /etc/passwd injection fix

    CRI-O fixes CVE-2026-15809, which allowed a bypass of the CVE-2022-4318 fix and /etc/passwd injection through newline characters in the HOME environment variable.

  • securityhighThe Go toolchain, updated to 1.26.4

    The Go toolchain is updated to 1.26.4 to fix CVE-2026-27145, CVE-2026-42504, and CVE-2026-42507.

Check if affected (4)

  • breakingThe insecure_registries option and --insecure-registry flag, removed

    Applies if you configure insecure_registries or use --insecure-registry.

  • breakingThe container_level_enabled default, changed to checkpoint_only

    Applies if you do not configure container_level_enabled.

  • breakingThe gRPC message size defaults, reduced to 16 MiB

    Applies if grpc_max_send_msg_size or grpc_max_recv_msg_size is not configured.

  • + 1 more on the release page
Source
Jaegerv2.21.0ObservabilitySep 14, 2026

A feature-rich release with breaking API and configuration changes, expanded experimental query and storage capabilities, and many correctness fixes. It also includes routine dependency updates.

Action needed (1)

  • breakingThe searchdepth constraint

    Query handling caps searchdepth at 10000 and rejects negative values.

Check if affected (4)

  • breakingRemoval of the v1 http endpoints

    Applies if you use v1 http endpoints.

  • breakingThe ai.enable_mcp configuration, replaced by ai.mcp

    Applies if you configure ai.enable_mcp.

  • breakingElasticsearch configuration key validation

    Applicability is not stated in the release notes.

  • + 1 more on the release page
Source
OpenTelemetryv0.161.0ObservabilitySep 14, 2026

A maintenance release with breaking removal of deprecated APIs alongside performance and correctness fixes. It also tightens feature-gate identifier validation and updates configuration schema handling.

Action needed (5)

  • breakingRemoval of deprecated AddScraper

    The deprecated AddScraper function is removed from pkg/scraperhelper/controller.

  • breakingRemoval of deprecated ZapOptions

    The deprecated ZapOptions configuration is removed from pkg/service.

  • breakingRemoval of deprecated WithForceUnmarshaler

    The deprecated WithForceUnmarshaler function is removed from pkg/xconfmap.

  • breakingRemoval of deprecated DefaultMetricsBuilderConfig

    The deprecated DefaultMetricsBuilderConfig function is removed from cmd/mdatagen.

  • breakingRemoval of deprecated LoggingOptions

    The deprecated LoggingOptions configuration is removed from pkg/service.

Check if affected (2)

  • breakingRemoval of deprecated AggregationTemporality, Duration, and SetDuration

    Applies if you use AggregationTemporality, Duration, or SetDuration.

  • breakingReplacement of deprecated configuration watcher APIs

    Applies if you use extensioncapabilities.ConfigWatcher, Extensions.NotifyConfig, or service.Settings.CollectorConf.

Source
Flatcar Container Linuxstable-4757.2.0Provisioning & RuntimeSep 14, 2026

A security-focused maintenance release with extensive Linux and OpenSSH vulnerability remediation, broad dependency updates, and platform and image changes. Operators should account for the dropped platform and image support and the new Vagrant 2.2.5 requirement.

Action needed (41)

Source
cert-managerv1.21.2SecuritySep 11, 2026

A maintenance release focused on correctness and data-exposure fixes. It also includes security-related dependency updates and a stricter default for namespaced Vault authentication.

Action needed (6)

  • securityACME server response body limit

    ACME server response bodies are capped at 16 MiB to prevent unbounded-body denial-of-service conditions.

  • securityChallenge.status.reason response disclosure fix

    The ACME HTTP-01 self-check no longer copies the fetched response body into Challenge.status.reason. This prevents internal response contents reached through redirects from being disclosed.

  • securityGo 1.26.6

    The release upgrades Go to 1.26.6, which includes security fixes in the Go command and several standard library packages.

  • securitygoogle.golang.org/grpc v1.83.2

    The release updates google.golang.org/grpc to v1.83.2 to fix reported security vulnerabilities.

  • securitygolang.org/x/crypto v0.56.0

    The release updates golang.org/x/crypto to v0.56.0 to fix reported security vulnerabilities.

  • breakingValidation for converted AdmissionReview requests

    Validation now also applies to equivalent-converted AdmissionReview requests on non-v1 API versions. These requests could previously bypass validation.

Check if affected (1)

  • breakingNamespaced Vault issuer ambient credentials default

    Applies if you use a namespaced Issuer with Vault AWS IAM authentication.

Source
gRPCv1.84.0Networking & MessagingSep 11, 2026

A maintenance release that enables gRPC capabilities and observability, broadens xDS matching, removes a WRR guard, and corrects proxy hostname handling. It also updates connection scaling service configuration and server listener matching.

Action needed (2)

  • breakingThe v2_non_owning_waker_implementation experiment enabled

    The v2_non_owning_waker_implementation experiment is enabled in the promise-based filter.

  • breakingThe WRR custom backend metrics guard removed

    The release removes the WRR environment-variable guard for custom backend metrics.

Source
Kyvernov1.19.1SecuritySep 10, 2026

A security-focused maintenance release with dependency updates and fixes for policy and egress behavior. It also includes correctness changes, deprecation warning enforcement, and a narrowed policy constraint that may require operator changes.

Action needed (2)

  • securitycriticalGo and x/net updates for CVE-2026-39821

    The release updates Go to 1.26.6 and x/net to resolve CVE-2026-39821.

  • securityhighGo update for CVE-2026-56853

    The release updates Go to address CVE-2026-56853.

Check if affected (3)

  • securityPolicyException scope bypass fix for GHSA-5cjf-wwfg-pj4c

    Applies if you use the PolicyException CRD.

  • securityapiCall.service egress blocklist bypass fix

    Applies if you configure apiCall.service egress.

  • breakingglobalContext constraint in namespaced policies

    Applies if you use globalContext in namespaced policies.

Source
Helmv4.3.0Kubernetes CoreSep 9, 2026

A feature release adding new Helm capabilities and output options, alongside correctness fixes and performance improvements. It also includes dependency updates with two disclosed security-related bumps.

Action needed (3)

  • securitycriticalgolang.org/x/net update for GO-2026-5026

    Helm updates golang.org/x/net to v0.55.0 to address GO-2026-5026.

  • securitymediumgo.opentelemetry.io/otel update for GO-2026-5158

    Helm updates go.opentelemetry.io/otel to v1.44.0 for GO-2026-5158.

  • breakingPer-file decompression size limit removal

    Helm removes the per-file decompression size limit from file decompression.

Check if affected (1)

  • breakingOwnership verification before resource deletion

    Applicability is not stated in the release notes.

Source
Daprv1.18.4Orchestration & ManagementSep 9, 2026

A workflow-heavy maintenance release corrects reliability, state-management, signing, and pub/sub delivery defects. It also changes binary gRPC metadata filtering for output bindings, with no newly announced operator configuration requirements.

Action needed (1)

  • breakingBinary gRPC metadata propagation in InvokeBinding, removed

    Binary gRPC metadata with keys ending in -bin is no longer copied from incoming gRPC calls into output binding component metadata for InvokeBinding.

Source
wasmCloudv2.9.0Orchestration & ManagementSep 8, 2026

A feature release that adds plugin, runtime, concurrency, and observability capabilities. It also corrects runtime defects and enforces guest-memory limits.

Action needed (1)

  • breakingThe max-guest-memory limit is enforced

    This release enforces the max-guest-memory limit.

Plan ahead (1)

  • deprecatedThe deprecated --enable-meters flag alias

Source
metal3-iov0.14.0Provisioning & RuntimeSep 8, 2026

A feature-rich release with breaking changes, new controllers, and expanded provisioning capabilities. It also includes correctness fixes and broad dependency updates.

Action needed (1)

  • breakingThe separate TryInit call, removed

    Provisioner no longer makes a separate TryInit call in this release.

Plan ahead (1)

  • deprecatedThe BMH Taints field, deprecated

Source
Linkerdedge-26.9.1Networking & MessagingSep 4, 2026

A maintenance release updates the proxy and dependencies, fixes destination behavior, and tightens multicluster credential and Link resource handling. The changes concern proxy, destination, and multicluster components, alongside routine dependency updates.

Action needed (2)

  • breakingCluster credential secrets and the exec auth provider

    Cluster credential secrets created by linkerd multicluster link use the token auth provider. The exec auth provider is disallowed because it is not used or necessary.

  • breakingLink resource lookup scope

    Link resource lookups are restricted to the linkerd-multicluster namespace.

Source
containerdv1.7.35Kubernetes CoreSep 4, 2026

A security-focused maintenance release with fixes for vulnerabilities and changes to image fetching and Windows log handling. Runtime and performance improvements are also included.

Action needed (2)

Check if affected (1)

  • breakingThe ScrubLogs default on Windows

    Applies if you run on Windows.

Source
containerdv2.0.12Kubernetes CoreSep 4, 2026

A security-focused maintenance release fixes two disclosed vulnerabilities, changes the Windows logging default, and hardens registry fetching. It also includes correctness and performance fixes.

Action needed (2)

  • securityCVE-2026-53495 and GHSA-7jxh-36q5-gcqv security fix

    This release fixes the disclosed vulnerability identified by CVE-2026-53495 and GHSA-7jxh-36q5-gcqv.

  • securityGHSA-rp3h-jf77-q9p4 security fix

    This release fixes the disclosed vulnerability identified by GHSA-rp3h-jf77-q9p4.

Check if affected (1)

  • breakingThe ScrubLogs Windows default

    Applies if you run containerd on Windows.

Source
Cloud Custodian0.9.52.0SecuritySep 3, 2026

A broad multi-cloud release adds resource integrations, filters, and policy actions across AWS, Azure, and GCP, alongside correctness fixes and dependency updates. Operators should also review the LDAP input handling improvement and the behavior changes affecting existing configurations.

Check if affected (3)

  • breakingThe Status field, replaced by State

    Applies if you configure Status.

  • breakingThe SCM basic auth method, replaced by an Entra ID bearer token

    Applies if you use SCM basic auth.

  • breakingThe cloud-run label mutation fields, restricted to the schema

    Applies if you use cloud-run.

Source
Vitessv24.0.3Storage & DataSep 3, 2026

A narrowly scoped breaking maintenance release removes the VRLog endpoint. Its enabling flag remains as a deprecated no-op until v26.

Check if affected (2)

  • breakingThe /debug/vrlog endpoint, removed

    Applies if you use /debug/vrlog.

  • deprecatedThe --vreplication-enable-http-log flag, deprecated as a no-op

    Applies if you configure --vreplication-enable-http-log.

Source
Vitessv23.0.6Storage & DataSep 3, 2026

A maintenance release with correctness fixes and dependency updates. The /debug/vrlog removal and newly enforced safety limits affect operators using those paths.

Action needed (2)

  • breakingRecursion-depth limit on the streaming recursive CTE path

    A recursion-depth limit is enforced on the streaming recursive CTE path.

  • breakingStored-procedure safety checks on the streaming CALL path

    Stored-procedure safety checks are enforced on the streaming CALL path.

Check if affected (1)

  • breakingThe /debug/vrlog endpoint, removed

    Applies if you use /debug/vrlog.

Plan ahead (1)

  • deprecatedThe --vreplication-enable-http-log flag, deprecatedremoval planned in v26

    Applies if you configure --vreplication-enable-http-log.

Source
OpenTelemetryv0.160.0ObservabilitySep 2, 2026

A maintenance and API-evolution release with client configuration deprecations, a higher Go toolchain requirement, performance improvements, and a breaking resource-creation API signature change. The release also includes compatibility, error-handling, platform support, and component behavior updates.

Check if affected (3)

  • breakingDeprecated fields with keepalive section

    Applicability is not stated in the release notes.

  • breakingGo 1.25.0 support removal

    Applies if you depend on go.

  • breakingtelemetry.Factory.CreateResource and telemetry.CreateResourceFunc return signature

    Applies if you use telemetry.Factory.CreateResource or telemetry.CreateResourceFunc.

Plan ahead (1)

  • deprecatedClient configuration fields deprecated in favor of keepalive

    Applies if you configure any of idle_conn_timeout, max_idle_conns, max_idle_conns_per_host, disable_keep_alives, idle_timeout, or keep_alives_enabled.

Source
Kubescapev4.0.13SecuritySep 2, 2026

A broad feature release expands scanning, policy, reporting, remediation, notifications, telemetry, integrations, and output capabilities. It also includes security hardening and stricter scan constraints, alongside many correctness and runtime fixes.

Action needed (2)

  • securityGo dependency security vulnerabilities

    Dependabot fixes security vulnerabilities in Go dependencies shipped with the release.

  • securitygosec SAST findings

    The release remediates gosec SAST findings in the Go codebase.

Check if affected (10)

  • securityGrafeas filtering through resourceURL

    Applies if you run imagescan.

  • breakingClient-supplied account and accessKey in scan requests

    Applies if you use scan requests.

  • breakingHard validation for --include-controls

    Applies if you configure --include-controls.

  • + 7 more on the release page

Plan ahead (1)

  • deprecatedThe --fail-threshold flag, hidden and deprecated

    Applies if you configure --fail-threshold.

Source
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