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Releases

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

Jun 2026Clear ×
Fluentdv1.19.3ObservabilityJun 25, 2026

A maintenance release with bug fixes, behavior changes, and two operator-visible default changes. It also updates a runtime dependency and tightens validation and payload handling; no security vulnerability or advisory is explicitly identified.

Check if affected (2)

  • breakingThe in_monitor_agent visibility default

    Applies if in_monitor_agent runs.

  • breakingThe in_debug_agent local-machine default

    Applies if in_debug_agent runs.

Source
OpenTelemetryv0.155.0ObservabilityJun 23, 2026

A release that removes stabilized feature gates, updates processor metric names, and changes service configuration APIs. It also adds schema and metadata tooling capabilities and fixes generator defects.

Check if affected (9)

  • breakingThe confightp.framedSnappy feature gate, removed

    Applies if you use confightp.framedSnappy.

  • breakingThe configoptional.AddEnabledField feature gate, removed

    Applies if you use configoptional.AddEnabledField.

  • breakingThe confmap.newExpandedValueSanitizer feature gate, removed

    Applies if you use confmap.newExpandedValueSanitizer.

  • + 6 more on the release page

Plan ahead (1)

  • deprecatedService configuration API deprecations

    Applies if you use service.Settings.CollectorConf or extensioncapabilities.ConfigWatcher.

Source
Cortexv1.21.1ObservabilityJun 5, 2026

A maintenance release with operator-facing security fixes and configuration changes across ingestion, distribution, and status pages. It also includes fixes for request handling, authentication, configuration exposure, gossip limits, and client and runtime panics.

Check if affected (3)

  • securityStored XSS protection in Alertmanager and Store Gateway status pages

    Applies if you run Alertmanager or Store Gateway.

  • securityWrappedHistogram native histogram size limit

    Applies if you use native histograms.

  • breakingDecompressed gzip output limit for ParseProtoReader and OTLP ingestion

    Applies if you use the OTLP ingestion path.

Source
Jaegerv2.19.0ObservabilityJun 3, 2026

This release adds API and storage capabilities, updates API query naming and defaults, and includes correctness fixes. No security advisories or security-specific fixes are disclosed.

Action needed (1)

  • breakingThe searchdepth default in the trace-summaries endpoint

    The default for searchdepth changed in the trace-summaries endpoint.

Source
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