Prometheus v3.5.1 contains dependency and toolchain version updates without code changes. The recorded release metadata does not describe security-related changes or operator actions beyond upgrading.
Source ↗Releases
AI-analyzed release notes for CNCF graduated and incubating projects.
Jan 2026Clear ×
This release adds installation and setup artifacts and fixes defects in RBAC permissions, portal refresh behavior, and experiment-name handling. No security advisories or security-specific flaws are disclosed.
Source ↗Prometheus v3.9.1 is a small bug-fix release. It addresses an Agent startup crash and restores scraping relabel keep and drop rules.
Source ↗This release updates histogram collection and TSDB behavior while adding capabilities across the API, PromQL, storage, and UI. It also includes fixes for query handling, storage validation, receivers, and interface behavior.
Action needed (1)
breakingA 10,000-set limit for the TSDB status endpoint
The TSDB status endpoint now limits responses to a maximum of 10,000 sets of statistics.
Check if affected (1)
breakingThe
native-histogramfeature flag has no effectApplies if you set
scrape_native_histogramsto collect Native Histogram samples from exporters.
OpenCost v1.119.1 contains a panic fix and changes to custom-cost configuration behavior. The release also includes internal notes whose details are not described here, with no security advisories identified.
Source ↗
Nothing here needs operator attention.
Source ↗A release focused on removing legacy v1 components and storage interfaces, while changing configuration and UI defaults. It also adds or expands experimental storage capabilities and includes fixes for storage behavior and dependency API changes.
Check if affected (9)
breakingRemaining
v1utilities published asv2.versionsx. x Applies if you use
v1 utilities.breakingThe UI theme selector, enabled by default
Applies if you use the UI.
breakingThe
storage/v1/grpcinterface, removedApplies if you use
storage/v1/grpc.- + 6 more on the release page