
Cupdate
Cupdate auto-detects container images in Kubernetes, Docker or Podman, finds newer versions and exposes results via a UI, API and RSS feed with vulnerability metadata.

Cupdate is a lightweight, zero-configuration service that discovers container images running on Kubernetes, Docker or Podman hosts, identifies newer available image versions, and surfaces version and vulnerability metadata through a UI, API and RSS feed.
Key Features
- Auto-detects container images in use across Kubernetes clusters or Docker/Podman hosts (single or multiple, local or remote)
- Identifies latest available image versions and correlates them with deployed versions
- Vulnerability data aggregation using registry or third-party sources (e.g., Docker Scout, Clair, GitHub Advisories, OSV) when available
- Visual UI for browsing images, versions, dependants and release notes
- Machine-friendly APIs and RSS feeds for integrations and automation
- Lightweight design with low CPU and memory footprint suitable for running alongside existing infrastructure
- Supports multiple OCI registries and common hosts (examples: docker.io, ghcr.io, quay.io, registry.k8s.io and other OCI-compliant registries)
Use Cases
- DevOps teams auditing deployed container images to prioritize manual upgrades
- Security teams reviewing aggregated vulnerability metadata for images in production
- Platform or SRE engineers building dashboards or automation that integrate image/version data via the API or RSS
Limitations and Considerations
- Cupdate does not perform deployments or modify manifests; it is intended as a discovery and reporting/dashboard tool, not an automated updater
- Podman support is labelled beta and requires Docker socket compatibility mode; behavior and compatibility may change
- Vulnerability coverage depends on participating registries and available SBOMs/advisories; not all images or registries will provide full scan data
Cupdate is intended as a discovery and observability tool to help teams see what container images are in use and what updates exist. It is suited to complement CI/CD or automated manifest-updater services rather than replace them.
