CVE-2026-54680: Kube-Logging Logging-Operator

Critical severity, CVSS 9.9. EPSS: 0.8% chance of exploitation in the next 30 days.

Logging operator automates the deployment and configuration of Kubernetes logging pipelines. Prior to 6.6.0, the Fluentd configuration renderer FluentRender in pkg/sdk/logging/model/render/fluent.go writes CRD strings such as Flow record_transformer.records values directly into fluent.conf without escaping, allowing a user who can create Flow resources to inject a Fluentd <match **> block using @type exec and execute arbitrary commands inside the Fluentd aggregator. This issue is fixed in version 6.6.0.

Affected products

• Kube-Logging Logging-Operator: before 6.6.0 (fixed in 6.6.0)

Published 2026-07-29. Last modified 2026-09-10.