Fluentd: Remote Code Execution (RCE) via Arbitrary File Write in `${tag}` Placeholder
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.8epss 1.1%
from disclosure to weapon28 days
Published on NVDJul 8
1st PoC+28d
exploitation probability
1.1%top 38% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
fluent · fluentdpublic PoCs found — 1
githubgithub.com/0xdak/CVE-2026-44024_exploit★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.