FKIE_CVE-2026-44161

Vulnerability from fkie_nvd - Published: 2026-07-08 22:17 - Updated: 2026-07-09 16:16
Severity
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L
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, the Fluentd out_http output plugin allows placeholders such as ${tag} in the endpoint configuration parameter, and if a placeholder value is derived from untrusted input an attacker can control the destination hostname of outbound HTTP requests and force requests to arbitrary internal services. This issue is fixed in version 1.19.3.
References
security-advisories@github.comhttps://github.com/fluent/fluentd/commit/c6a01ea2e0ea01977f8d615f7c6dbfae4cba88c9
security-advisories@github.comhttps://github.com/fluent/fluentd/pull/5394
security-advisories@github.comhttps://github.com/fluent/fluentd/releases/tag/v1.19.3
security-advisories@github.comhttps://github.com/fluent/fluentd/security/advisories/GHSA-72f5-rr8c-r6gr
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "fluentd",
          "vendor": "fluent",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.19.3"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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, the Fluentd out_http output plugin allows placeholders such as ${tag} in the endpoint configuration parameter, and if a placeholder value is derived from untrusted input an attacker can control the destination hostname of outbound HTTP requests and force requests to arbitrary internal services. This issue is fixed in version 1.19.3."
    }
  ],
  "id": "CVE-2026-44161",
  "lastModified": "2026-07-09T16:16:41.600",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-44161",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-09T14:37:57.811738Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-08T22:17:14.737",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/fluent/fluentd/commit/c6a01ea2e0ea01977f8d615f7c6dbfae4cba88c9"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/fluent/fluentd/pull/5394"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/fluent/fluentd/releases/tag/v1.19.3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/fluent/fluentd/security/advisories/GHSA-72f5-rr8c-r6gr"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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