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Releases

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

May 2026Clear ×
containerdv2.2.4Kubernetes CoreMay 20, 2026

A maintenance release with security updates, including a dependency update tied to an advisory. It also includes compatibility and runtime changes across storage, policy, sandbox, validation, and toolchain areas.

Action needed (2)

Source
containerdv2.0.9Kubernetes CoreMay 20, 2026

A maintenance release with a disclosed security fix, a narrower default socket policy, expanded compatibility for volatile mount options and AppArmor, and several correctness fixes. It also includes updates to container event handling, tar extraction, OCI USER validation, sandbox field forwarding, and event topics.

Action needed (1)

Check if affected (1)

  • breakingThe default seccomp socket policy

    Applies if you use seccomp.

Source
containerdv1.7.32Kubernetes CoreMay 20, 2026

containerd v1.7.32 includes a disclosed security advisory alongside correctness and compatibility fixes. The release concerns users assessing security exposure or changes in runtime and configuration behavior.

Action needed (1)

Source
containerdv2.3.1Kubernetes CoreMay 20, 2026

A maintenance release focused on runtime correctness and security, including fixes across snapshotter, storage, and server components. It also contains compatibility changes and updates to the API and Go toolchain.

Action needed (1)

  • securityhighCVE-2026-46680 correction

    The fix for CVE-2026-46680 ships in this release.

Check if affected (1)

  • breakingThe overlayfs "rebase" capability, disabled in user namespaces

    Applies if you use overlayfs and run in a user namespace.

Plan ahead (1)

  • deprecatedTask fields in Runc options, deprecated

    Applies if you configure task fields in Runc options.

Source
Helmv3.21.0Kubernetes CoreMay 14, 2026

Helm v3.21.0 is a maintenance release with dependency updates and fixes to chart and OCI handling. It also includes a security fix in the opentelemetry packages.

Action needed (1)

  • securityThe opentelemetry packages, upgraded for CVE patches

    Helm v3.21.0 upgrades the opentelemetry packages to patch CVEs.

Source
Helmv4.2.0Kubernetes CoreMay 14, 2026

A feature and maintenance release with new template and CLI capabilities, dependency updates, flag deprecations, and numerous correctness fixes. It also includes security fixes for plugin path traversal and GO-2026-4394.

Action needed (1)

  • securityhighgo.opentelemetry.io/otel/sdk update for GO-2026-4394

    Helm v4.2.0 updates go.opentelemetry.io/otel/sdk to v1.40.0 for GO-2026-4394.

Check if affected (1)

  • securityPlugin version path traversal fix

    Applies if you use the Plugin extension.

Plan ahead (1)

  • deprecatedThe --hide-notes and --render-subchart-notes flags, deprecated

    Applies if you use --hide-notes or --render-subchart-notes.

Source
CRI-Ov1.36.0Kubernetes CoreMay 5, 2026

CRI-O v1.36.0 is a substantive operator-facing feature and maintenance release with runtime and operational changes. It also includes a security update to spdystream and a broad dependency refresh.

Action needed (1)

  • securityhighThe spdystream dependency update for CVE-2026-35469

    CRI-O v1.36.0 updates the spdystream dependency to fix CVE-2026-35469.

Source
CRI-Ov1.35.3Kubernetes CoreMay 5, 2026

A maintenance release that adds a runtime metric and a GOMAXPROCS configuration field, fixes two runtime defects, and reverts CNI monitoring after node bootstrapping regressions. It also updates the spdystream dependency to address CVE-2026-35469.

Action needed (2)

  • securityhighThe spdystream dependency update for CVE-2026-35469

    The spdystream dependency is updated to address CVE-2026-35469. The update ships in this release.

  • breakingCRI-O CNI monitoring, reverted

    CRI-O reverts CNI monitoring because it caused node bootstrapping regressions. The change ships in this release.

Source
CRI-Ov1.34.8Kubernetes CoreMay 5, 2026

CRI-O v1.34.8 includes a security-relevant dependency update and adds operator-facing observability and configuration capabilities. The dependency update is the release change that requires upgrading, while the other additions concern optional setup or informational use.

Action needed (1)

  • securityhighCVE-2026-35469 fix in the spdystream dependency

    CRI-O v1.34.8 updates the spdystream dependency to fix CVE-2026-35469.

Source
CRI-Ov1.33.12Kubernetes CoreMay 5, 2026

CRI-O v1.33.12 includes a security fix for a disclosed vulnerability in the spdystream dependency. It also adds the min_injected_gomaxprocs configuration field for controlling the floor of injected GOMAXPROCS values.

Action needed (1)

  • securityhighCVE-2026-35469 fix in the spdystream dependency

    CVE-2026-35469 is fixed by updating the spdystream dependency in CRI-O v1.33.12.

Source
etcdv3.6.11Kubernetes CoreMay 1, 2026

A maintenance release with a correctness fix, an RBAC authorization bypass fix, and a security-related dependency update for GO-2026-4962. It also records Go 1.25.9 as the toolchain used to build the binaries.

Action needed (1)

  • securitymediumgolang.org/x/image update for GO-2026-4962

    The release updates golang.org/x/image to v0.39.0 to resolve GO-2026-4962.

Check if affected (1)

  • securityRBAC authorization bypass in nested Put requests

    Applies if you use RBAC.

Source
etcdv3.5.30Kubernetes CoreMay 1, 2026

A maintenance release with a security fix for an RBAC authorization bypass in transaction handling. It also includes an ordinary correctness fix and a Go toolchain dependency update.

Action needed (1)

  • securityRBAC authorization bypass in nested etcd transactions

    The release fixes an RBAC authorization bypass that allowed read access through PrevKv or lease attachment in Put requests nested in etcd transactions. The fix ships in this release.

Source
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