---
title: "CVE-2026-54680: Logging operator has Fluentd configuration injection that allows remote code execution"
url: https://erroneo.us/security/cve/CVE-2026-54680/
description: "CVE-2026-54680 (github.com/kube-logging/logging-operator (Go)): Logging operator automates the deployment and configuration of Kubernetes logging pipelines.…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-07-29
date_modified: 2026-07-30
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-54680"
kev: false
cvss: 9.9
epss: 0.00785
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-54680: Logging operator has Fluentd configuration injection that allows remote code execution

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.8% , percentile 56: FIRST’s model estimates a 0.8% chance of exploitation activity in the next 30 days, higher than 56% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes github.com/kube-logging/logging-operator (Go) < 0.0.0-20260608145523-cf437d7f1e05, fixed in 0.0.0-20260608145523-cf437d7f1e05 . Check your lockfile, including transitive dependencies.

## What it is

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 recordtransformer.records values directly into fluent.conf without escaping, allowing a user who can create Flow resources to inject a Fluentd block using @type exec and execute arbitrary commands inside the Fluentd aggregator. This issue is fixed in version 6.6.0.

## Affected packages

- Go `github.com/kube-logging/logging-operator` < 0.0.0-20260608145523-cf437d7f1e05 → fixed: 0.0.0-20260608145523-cf437d7f1e05

## Affected products (CVE record)

- kube-logging logging-operator: < 6.6.0

## Severity

- GitHub_M CVSS 3.1: 9.9 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.9 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.78% probability of exploitation activity in the next 30 days; percentile 56.

## Sources

- [GitHub Advisory GHSA-mjqf-28ph-426h](https://github.com/advisories/GHSA-mjqf-28ph-426h)
- [CVE.org record CVE-2026-54680](https://www.cve.org/CVERecord?id=CVE-2026-54680)
- [NVD entry CVE-2026-54680](https://nvd.nist.gov/vuln/detail/CVE-2026-54680)
- [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)

---
Source page: https://erroneo.us/security/cve/CVE-2026-54680/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt