CVE-2025-12972: CWE-35: Path Traversal in FluentBit Fluent Bit
Fluent Bit out_file plugin does not properly sanitize tag values when deriving output file names. When the File option is omitted, the plugin uses untrusted tag input to construct file paths. This allows attackers with network access to craft tags containing path traversal sequences that cause Fluent Bit to write files outside the intended output directory.
CVE-2025-12972: CWE-35: Path Traversal in FluentBit Fluent Bit
Description
Fluent Bit out_file plugin does not properly sanitize tag values when deriving output file names. When the File option is omitted, the plugin uses untrusted tag input to construct file paths. This allows attackers with network access to craft tags containing path traversal sequences that cause Fluent Bit to write files outside the intended output directory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- certcc
- Date Reserved
- 2025-11-10T18:00:22.449Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6929e1b04121026312bb4304
Added to database: 11/28/2025, 5:53:52 PM
Last updated: 11/28/2025, 5:54:15 PM
Views: 1
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