CVE-2026-54680Public exploitNetwork attack vectorHinoki check available

Command execution via unescaped Fluentd configuration values

Published Jul 29, 2026 · Updated Jul 29, 2026

Configuration injection in Kube Logging Logging Operator before 6.6.0 allows remote authenticated users to execute commands in Fluentd. FluentRender writes CRD-supplied record_transformer values into fluent.conf without escaping newlines, allowing injected blocks to select the exec plugin. Access to create Flow and Output resources is required, and commands run inside the shared Fluentd aggregator with access to data and services reachable from that pod.

CVSS severity9.9
Critical
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Configuration injection in Kube Logging Logging Operator before 6.6.0 allows remote authenticated users to execute commands in Fluentd. FluentRender writes CRD-supplied record_transformer values into fluent.conf without escaping newlines, allowing injected blocks to select the exec plugin. Access to create Flow and Output resources is required, and commands run inside the shared Fluentd aggregator with access to data and services reachable from that pod.

The record

CVE
CVE-2026-54680
Published
Jul 29, 2026
Updated
Jul 29, 2026
Vendor
Kube Logging
Product
Logging Operator
Classifications
CWE-74, CWE-77, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 6.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Kube Logging · Logging Operatorversion=< 6.6.0

Published CVSS scores

9.9GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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