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CVE-2026-44024

Fluentd remote code execution

9.8 CRITICALEPSS 1.08%
  1. Published8 Jul 2026

Description

Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Prior to 1.19.3, Fluentd allows dynamically constructing file paths using the ${tag} placeholder, and insufficient validation of ${tag} in file configurations such as the path parameter of the out_file plugin allows attackers sending untrusted tags containing path traversal characters to write or overwrite arbitrary files and potentially achieve remote code execution. This issue is fixed in version 1.19.3.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Fluentd< 1.19.3

Remediation

Fixed in
Fluentd≥ 1.19.3

References

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Frequently asked

Is CVE-2026-44024 being actively exploited?

CVE-2026-44024 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.08%.

How severe is CVE-2026-44024?

CVE-2026-44024 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.08% probability of exploitation.

Which products are affected by CVE-2026-44024?

Affected products include Fluentd.

How do I fix CVE-2026-44024?

Upgrade affected software to a fixed version, for example Fluentd 1.19.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-44024 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.