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CVE-2025-12972

5.3 medium SSVC exploitation: none Modified
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 5.3 · treasuredataNVD modified 2026-10-08 10:10

Affected (CPE criteria) 1

  • cpe:2.3:a:treasuredata:fluent_bit:4.1.0:*:*:*:*:*:*:*

References 2