CVE-2026-54680

CRITICAL 9.9

Logging operator has Fluentd configuration injection that allows remote code execution

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-74 CWE-77
Vendor	kube-logging
Product	logging-operator
Published	Jul 29, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

kube-logging / logging-operator

< 6.6.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/kube-logging/logging-operator/security/advisories/GHSA-mjqf-28ph-426h github.com: https://github.com/kube-logging/logging-operator/commit/cf437d7f1e056c78740bf5716ac8bdebcf002425 github.com: https://github.com/kube-logging/logging-operator/releases/tag/6.6.0