CVE-2026-44024

Published: Jul 8, 2026Modified: Jul 13, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: security-advisories@github.com (Secondary)

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.

Affected (1)

Products: Fluentd: Fluentd

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Fluentd Fluentd	Before 1.19.3

Related CWEs

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (4)

https://github.com/fluent/fluentd/commit/45c87a81f3ac0b72b3f9dcfe8cfb5f9038f81437

Source: security-advisories@github.com

Patch

https://github.com/fluent/fluentd/pull/5391

Source: security-advisories@github.com

Issue TrackingPatch

https://github.com/fluent/fluentd/releases/tag/v1.19.3

Source: security-advisories@github.com

ProductRelease Notes

https://github.com/fluent/fluentd/security/advisories/GHSA-44hj-4m45-frj3

Source: security-advisories@github.com

MitigationVendor Advisory

Timeline

No history available yet.