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.

An update of the rubygem package has been released.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-44024)

ID	Name	Product	Family	Type	Severity
337982	Photon OS 5.0: Rubygem PHSA-2026-5.0-91-0960	Nessus	PhotonOS Local Security Checks	Local	critical
333802	Photon OS 5.0: Rubygem PHSA-2026-5.0-92-0927	Nessus	PhotonOS Local Security Checks	Local	critical
329206	Photon OS 5.0: Rubygem PHSA-2026-5.0-0927	Nessus	PhotonOS Local Security Checks	Local	critical
444012	SCA: security update for fluentd (GHSA-44hj-4m45-frj3)	Tenable Cloud Security	SCA Checks	Local	critical
444012	SCA: security update for fluentd (GHSA-44hj-4m45-frj3)	Tenable Self-Hosted Container Security	SCA Checks	Local	critical

Detections

Analytics

CVE-2026-44024

critical

Tenable Plugins

critical

critical

critical

critical

critical