cve-2026-44024

{
  "document": {
    "category": "csaf_vex",
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    "distribution": {
      "text": "Copyright © Red Hat, Inc. All rights reserved.",
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    "lang": "en",
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        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
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    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
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    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44024.json"
      }
    ],
    "title": "fluentd: Fluentd: Remote Code Execution via arbitrary file write due to insufficient tag validation",
    "tracking": {
      "current_release_date": "2026-07-13T16:20:42+00:00",
      "generator": {
        "date": "2026-07-13T16:20:42+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.3.2"
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      },
      "id": "CVE-2026-44024",
      "initial_release_date": "2026-07-08T21:20:29.598000+00:00",
      "revision_history": [
        {
          "date": "2026-07-08T21:20:29.598000+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-07-13T16:17:21+00:00",
          "number": "2",
          "summary": "Current version"
        },
        {
          "date": "2026-07-13T16:20:42+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
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        "name": "Red Hat",
        "product": {
          "name": "All currently supported Red Hat products",
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-44024",
      "discovery_date": "2026-07-08T22:01:21.063167+00:00",
      "flags": [
        {
          "label": "vulnerable_code_not_present",
          "product_ids": [
            "red_hat_products"
          ]
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Fluentd, a data collector. This vulnerability allows a remote attacker to achieve arbitrary file write and potentially remote code execution by sending untrusted tags containing path traversal characters. The issue arises from insufficient validation of the ${tag} placeholder in file configurations, such as the path parameter of the out_file plugin. Successful exploitation could lead to a full system compromise without authentication, depending on the Fluentd configuration and its process privileges.",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
          "text": "Red Hat has determined that no Red Hat product is currently affected by this vulnerability. Exploitation requires a Fluentd deployment configured with an output plugin, such as out_file, that constructs file paths dynamically from the ${tag} placeholder, combined with the ability for an attacker to submit untrusted, attacker-influenced tags to that Fluentd instance (for example, via an exposed forward or HTTP input). Deployments that do not accept externally influenced tags, or that do not use tag-based dynamic path construction in output plugin configuration, are not exposed to this issue in practice. Red Hat has completed a portfolio-wide search for Fluentd across Red Hat product offerings (strict and substring dependency search) and found no currently supported Red Hat product that ships the vulnerable code path.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "known_not_affected": [
          "red_hat_products"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-44024"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-44024",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-44024"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-44024",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44024"
        },
        {
          "category": "external",
          "summary": "https://github.com/fluent/fluentd/commit/45c87a81f3ac0b72b3f9dcfe8cfb5f9038f81437",
          "url": "https://github.com/fluent/fluentd/commit/45c87a81f3ac0b72b3f9dcfe8cfb5f9038f81437"
        },
        {
          "category": "external",
          "summary": "https://github.com/fluent/fluentd/pull/5391",
          "url": "https://github.com/fluent/fluentd/pull/5391"
        },
        {
          "category": "external",
          "summary": "https://github.com/fluent/fluentd/releases/tag/v1.19.3",
          "url": "https://github.com/fluent/fluentd/releases/tag/v1.19.3"
        },
        {
          "category": "external",
          "summary": "https://github.com/fluent/fluentd/security/advisories/GHSA-44hj-4m45-frj3",
          "url": "https://github.com/fluent/fluentd/security/advisories/GHSA-44hj-4m45-frj3"
        }
      ],
      "release_date": "2026-07-08T21:20:29.598000+00:00",
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "red_hat_products"
          ]
        }
      ],
      "title": "fluentd: Fluentd: Remote Code Execution via arbitrary file write due to insufficient tag validation"
    }
  ]
}