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Critical severity9.8OSV Advisory· Published Jul 8, 2026· Updated Jul 13, 2026

CVE-2026-44024

CVE-2026-44024

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 packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
fluentdRubyGems
< 1.19.31.19.3

Affected products

18

Patches

Vulnerability mechanics

References

5

News mentions

2