CVE-2022-36049: Fluxcd FLUX2

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

Flux2 is a tool for keeping Kubernetes clusters in sync with sources of configuration, and Flux's helm-controller is a Kubernetes operator that allows one to declaratively manage Helm chart releases. Helm controller is tightly integrated with the Helm SDK. A vulnerability found in the Helm SDK that affects flux2 v0.0.17 until v0.32.0 and helm-controller v0.0.4 until v0.23.0 allows for specific data inputs to cause high memory consumption. In some platforms, this could cause the controller to panic and stop processing reconciliations. In a shared cluster multi-tenancy environment, a tenant could create a HelmRelease that makes the controller panic, denying all other tenants from their Helm releases being reconciled. Patches are available in flux2 v0.32.0 and helm-controller v0.23.0.

Affected products

• Fluxcd FLUX2: from 0.0.17, before 0.32.0 (fixed in 0.32.0)
• Fluxcd Helm-Controller: from 0.0.4, before 0.23.0 (fixed in 0.23.0)
• Helm Helm: from 3.0.0, before 3.9.4 (fixed in 3.9.4)

Published 2022-09-07. Last modified 2026-06-17.