{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2019-5418",
  "revision": 1,
  "title": "Ruby on Rails — accept header discloses arbitrary files",
  "summary": "Action View in Rails before 5.2.2.1, 5.1.6.2, 5.0.7.2 and 4.2.11.1 lets a crafted accept header steer a file-rendering call, so an attacker reads any file the application process can reach.",
  "source_type": "cve",
  "severity": "high",
  "cvss": {
    "score": 7.5,
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
    "version": "3.1"
  },
  "epss": 0.98507,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": true,
    "attack_complexity": "low",
    "kev_added": "2025-07-07",
    "prerequisites": "Network access to a route that renders a file; no credentials needed."
  },
  "remediation": {
    "patch_available": true
  },
  "mitre_attack": [
    "T1083"
  ],
  "kill_chain": "collection",
  "recommended_action": "Upgrade Rails past 5.2.2.1, 5.1.6.2, 5.0.7.2 or 4.2.11.1 now; exploitation is near certain, so rotate the secret key base and the app's credentials.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2019-5418",
      "retrieved_at": "2026-09-24T12:03:01.274Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "exploitation.kev_added"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-09-24T12:03:01.274Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2019-5418",
      "retrieved_at": "2026-09-24T12:03:01.274Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2019-5418",
      "retrieved_at": "2026-09-24T12:03:01.274Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-5418",
      "label": "NVD record"
    },
    {
      "type": "cisa",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "label": "CISA Known Exploited Vulnerabilities catalog"
    },
    {
      "type": "vendor_advisory",
      "url": "http://www.openwall.com/lists/oss-security/2019/03/22/1"
    },
    {
      "type": "vendor_advisory",
      "url": "https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/"
    },
    {
      "type": "vendor_advisory",
      "url": "https://web.archive.org/web/20190313201629/https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/"
    }
  ],
  "published_at": "2019-03-27T14:29:01.533Z",
  "issued_at": "2026-09-24T12:03:01.274Z",
  "tags": [
    "rails",
    "ruby",
    "path-traversal",
    "information-disclosure",
    "kev"
  ]
}