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Fluentd: Exposure of Sensitive Information via Monitor Agent API

Type: advisorySources: OSV

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.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-44025
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 16:49 UTC · Revision 1

Source evidence

Fluentd: Exposure of Sensitive Information via Monitor Agent API

core-osv · Original source

Published 8 Jul 2026, 21:23 UTC

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.

osv:CVE-2026-44025
Complete source record
{
  "id": "7d1ecdfcaa358ba3cd8e0316e9c2a50b07a27ebc0c9584988423ca8a32d790fa",
  "url": "https://osv.dev/vulnerability/CVE-2026-44025",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Fluentd: Exposure of Sensitive Information via Monitor Agent API",
    "summary": "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.",
    "evidence": "osv:CVE-2026-44025",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-44025",
      "aliases": [
        "BIT-fluentd-2026-44025",
        "CVE-2026-44025",
        "GHSA-pr7j-96cj-549h"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/fluent/fluentd",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "43c860907e3d6a92c922233fd16eb2ed9ea16b69"
                },
                {
                  "fixed": "990921518971699b9a97441970674d1800e29177"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:fluentd:fluentd:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.19.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "990921518971699b9a97441970674d1800e29177"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "43c860907e3d6a92c922233fd16eb2ed9ea16b69"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.19.3"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.19.2",
            "v1.19.1",
            "v1.19.0",
            "v1.18.0",
            "v1.17.1",
            "v1.17.0",
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44025.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.493921827Z",
      "provider": "osv",
      "references": [
        "https://github.com/fluent/fluentd/releases/tag/v1.19.3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44025.json",
        "https://github.com/fluent/fluentd/security/advisories/GHSA-pr7j-96cj-549h",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-44025",
        "https://github.com/fluent/fluentd/commit/990921518971699b9a97441970674d1800e29177",
        "https://github.com/fluent/fluentd/pull/5392"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-306"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44025.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-44025",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504919,
  "published_at": "2026-07-08T21:23:16.92+00:00"
}