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Update Helm release keda to v2.21.0 - #183

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Sep 28, 2026
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Update Helm release keda to v2.21.0#183
arunanshub merged 1 commit into
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renovate/platform

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@renovate renovate Bot commented Sep 28, 2026

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ℹ️ Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

Package Update Change
keda minor 2.20.2 → 2.21.0

Release Notes

kedacore/keda (keda)

v2.21.0

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We are happy to release KEDA 2.21.0 🎉

[!IMPORTANT]
KEDA 2.21.0 contains three breaking changes. If you are upgrading from KEDA 2.20, review Upgrading from KEDA 2.20 to 2.21 before upgrading.

Before upgrading from KEDA 2.20

Service account token audience enforcement (CVE-2026-77524)

KEDA 2.21 fixes the critical CVE-2026-77524 / GHSA-637c-6jxx-4rwm. You are affected if you use:

  • Vault Kubernetes authentication, including configurations using the operator token, an existing projected token, or credential.serviceAccountName.
  • Any TriggerAuthentication or ClusterTriggerAuthentication using boundServiceAccountToken, including integrations with Metrics API, Prometheus, Loki, Datadog Cluster Agent, and other token-authenticated receivers.

You are not affected if you use ordinary Vault token authentication, API keys, OAuth credentials, or another authentication method that does not use a bound service account token. Before upgrading, review carefully the upgrade guide

Temporal Rules-Based Versioning settings

The Temporal scaler no longer accepts the deprecated buildId, selectAllActive, and selectUnversioned settings. Existing ScaledObjects and ScaledJobs containing them will fail scaler metadata parsing. Remove the settings for unversioned workers, or migrate versioned workers to workerDeploymentName and workerDeploymentBuildId. See Temporal Rules-Based Versioning settings.

Highlights

  • Reduce redundant scaler-backend requests when the HPA already owns the scaling decision (#​7999, #​8031).
  • Add Azure Cosmos DB Change Feed, ClickHouse, and GCP Cloud Spanner scalers.
  • Let external scalers update HPA targets dynamically through StreamMetricSpec, and expose external-scaler gRPC client metrics.
  • Add Prometheus OAuth2 client-credentials authentication, Kafka Kerberos credential-cache support, and Azure Pipelines service-principal authentication.
  • Improve scaler and authentication lifecycles with deterministic cancellation, refresh handling, Kubernetes API timeouts, and external-scaler connection cleanup.

Deprecation notice

The Liiklus scaler is deprecated because the upstream project is unmaintained. Its code is planned for removal in a later KEDA release. See #​7929.

Learn how to deploy KEDA by reading our documentation.

🗓️ The next KEDA release is currently estimated for the 2nd week of January 2027. Learn more in our roadmap.

Breaking Changes

Deprecations

  • 5744068: Liiklus Scaler: Deprecate the scaler because its upstream project is unmaintained; removal is planned for a later KEDA release (#​7938, #​7929) (@​Copilot)

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@arunanshub
arunanshub merged commit 42eb5e8 into master Sep 28, 2026
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@arunanshub
arunanshub deleted the renovate/platform branch September 28, 2026 21:04
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