CVE-2026-44024

critical · 9.8

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.

9.8

CVSS

1.1%

EPSS (exploit prob.)

64th

EPSS percentile

2026-07-08

Published

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

Weaknesses

CWE-22

Affected products

Vendor	Product	Affected versions
fluentd	fluentd	< 1.19.3

Check a specific version with /api/v1/cve/match.

References

https://github.com/fluent/fluentd/commit/45c87a81f3ac0b72b3f9dcfe8cfb5f9038f81437
https://github.com/fluent/fluentd/pull/5391
https://github.com/fluent/fluentd/releases/tag/v1.19.3
https://github.com/fluent/fluentd/security/advisories/GHSA-44hj-4m45-frj3

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-44024