CVE-2026-44025
Fluentd: Exposure of Sensitive Information via Monitor Agent API
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.
INFO
Published Date :
July 8, 2026, 10:17 p.m.
Last Modified :
July 16, 2026, 2:31 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update Fluentd to version 1.19.3.
- Review and remove exposed credentials.
- Restrict access to the monitor API.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-44025.
| URL | Resource |
|---|---|
| https://github.com/fluent/fluentd/commit/990921518971699b9a97441970674d1800e29177 | Patch |
| https://github.com/fluent/fluentd/pull/5392 | Issue Tracking Patch |
| https://github.com/fluent/fluentd/releases/tag/v1.19.3 | Release Notes |
| https://github.com/fluent/fluentd/security/advisories/GHSA-pr7j-96cj-549h | Patch Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-44025 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-44025
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-44025 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-44025 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 16, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:fluentd:fluentd:*:*:*:*:*:*:*:* versions up to (excluding) 1.19.3 Added Reference Type GitHub, Inc.: https://github.com/fluent/fluentd/commit/990921518971699b9a97441970674d1800e29177 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/fluent/fluentd/pull/5392 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/fluent/fluentd/releases/tag/v1.19.3 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/fluent/fluentd/security/advisories/GHSA-pr7j-96cj-549h Types: Patch, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 09, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-44025', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-09T13:47:05.851155Z'} -
New CVE Received by [email protected]
Jul. 08, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'fluent', 'product': 'fluentd', 'versions': [{'status': 'affected', 'version': '< 1.19.3'}]}] Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-306 Added Reference https://github.com/fluent/fluentd/commit/990921518971699b9a97441970674d1800e29177 Added Reference https://github.com/fluent/fluentd/pull/5392 Added Reference https://github.com/fluent/fluentd/releases/tag/v1.19.3 Added Reference https://github.com/fluent/fluentd/security/advisories/GHSA-pr7j-96cj-549h