CRITICAL

CVE-2026-44024

CVSS v3

9.8

CRITICAL

EPSS Score

1.1 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

fluentdRubyGemsall versions · fixed in 1.19.3
fluentdBitnamiall versions · fixed in 1.19.3

Vendor advisories

CVE-2026-44024 Red Hat Product Security
fluentd: Fluentd: Remote Code Execution via arbitrary file write due to insufficient tag validation

Full record on NVD

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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2026-07-08
Last Modified: 2026-07-08

Frequently asked questions

What is CVE-2026-44024?

Is CVE-2026-44024 actively exploited?

Active exploitation of CVE-2026-44024 has not been confirmed. Its EPSS score was 1.1% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-44024?

CVE-2026-44024 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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