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CVE-2026-44024
9.8 CRITICAL
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): High (H)
- Integrity (I): High (H)
- Availability (A): High (H)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): High (H)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): High (H)
- Modified Availability (MA): High (H)
Activity log
- Created suggestion
Fluentd: Remote Code Execution (RCE) via Arbitrary File Write in `${tag}` Placeholder
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.
References
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https://github.com/fluent/fluentd/security/advisories/GHSA-44hj-4m45-frj3 x_refsource_CONFIRM
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https://github.com/fluent/fluentd/pull/5391 x_refsource_MISC
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https://github.com/fluent/fluentd/releases/tag/v1.19.3 x_refsource_MISC
Affected products
fluentd
- ==< 1.19.3
Package maintainers
-
@nicknovitski Nick Novitski <nixpkgs@nicknovitski.com>