CVE-2026-44025

Fluentd: Exposure of Sensitive Information via Monitor Agent API

HIGH
7.5
CVSS Score
Published: July 8, 2026 at 09:23 PM UTC
Updated: October 25, 2026 at 05:10 PM UTC
2 products affected across 2 vendorsFluentdFluentd

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

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's Monitor Agent plugin in_monitor_agent exposes internal metrics and plugin information via a REST API, and responses from /api/plugins.json and related endpoints unintentionally include internal instance variables that may contain database passwords, API keys, or cloud credentials. This issue is fixed in version 1.19.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.19.3
Affected range stops below 1.19.3, so it looks safe — our inference, not a vendor statement
v < 1.19.3
Affected range stops below 1.19.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

x_refsource_CONFIRMPatchVendor Advisory
Source: cverecord
https://github.com/fluent/fluentd/security/advisories/GHSA-pr7j-96cj-549h
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/fluent/fluentd/pull/5392
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/fluent/fluentd/releases/tag/v1.19.3

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-306

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