6.5
/ 10
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Description
Fluent Bit in_forward input plugin does not properly enforce the security.users authentication mechanism under certain configuration conditions. This allows remote attackers with network access to the Fluent Bit instance exposing the forward input to send unauthenticated data. By bypassing authentication controls, attackers can inject forged log records, flood alerting systems, or manipulate routing decisions, compromising the authenticity and integrity of ingested logs.
Basic Information
ID
CVE-2025-12969
Source
certcc
Published
Nov 24, 2025 at 14:41
Modified
Nov 24, 2025 at 18:02
Affected Product
Vendor
FluentBit
Product
FluentBit
Version
4.1.0
Affected Versions
FluentBit FluentBit 4.1.0