P4Verified

CVE-2025-12978: fluent bit 4.1.0; +1 more affected products

CVE-2025-12978. CVSS 3.1 base score 5.4 (MEDIUM, Source advisory). EPSS 0.00393 (percentile 0.31253), scored 2026-10-06.

Affected technology

fluent bit · 4.1.0
treasuredata

Fluent Bit · 0 to before 4.0.12
FluentBit

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

A remote attacker with authenticated or exposed access to these input endpoints can exploit this behavior to manipulate tags and redirect records to unintended destinations. Source advisory’s CVSS 3.1 assessment (base score 5.4/10) rates confidentiality impact as none; integrity and availability impact as low.

Published 2026-10-08 17:35:07.677616+00:00

CCR priority: 21.7 /100 (P4)
CVSS 3.1: 5.4 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L · Source advisory
EPSS: 0.00393 · percentile 0.31359 · 2026-10-08
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-08 17:36:22.845483+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-08 17:32:11.049884+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-12978.html