{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-21620",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-21620",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-02-20T10:57:08.620Z",
    "updatedAt": "2026-07-24T14:16:25.195Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "TFTP Path Traversal",
      "summary": "Relative Path Traversal, Improper Isolation or Compartmentalization vulnerability in erlang otp erlang/otp (tftp_file modules), erlang otp inets (tftp_file modules), erlang otp tftp (tftp_file modules) allows Relative Path Traversal. This vulnerability is associated with program files lib/tftp/src/tftp_file.erl, src/tftp_file.erl.\n\nThis issue affects OTP from OTP 17.0 before OTP 28.3.2, OTP 27.3.4.8 and OTP 26.2.5.17, corresponding to tftp from 1.0 before 1.2.4, 1.2.2.1 and 1.1.1.1; also inets from 5.10 before 7.0.",
      "affected": [
        {
          "vendor": "Erlang",
          "product": "OTP",
          "packageName": "erlang/otp",
          "collectionURL": "https://github.com",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "17.0",
              "status": "affected",
              "versionType": "otp",
              "lessThan": "*",
              "changes": [
                {
                  "at": "26.2.5.17",
                  "status": "unaffected"
                },
                {
                  "at": "27.3.4.8",
                  "status": "unaffected"
                },
                {
                  "at": "28.3.2",
                  "status": "unaffected"
                }
              ]
            },
            {
              "version": "07b8f441ca711f9812fad9e9115bab3c3aa92f79",
              "status": "affected",
              "versionType": "git",
              "lessThan": "*",
              "changes": [
                {
                  "at": "655fb95725ba2fb811740b57e106873833824344",
                  "status": "unaffected"
                },
                {
                  "at": "3970738f687325138eb75f798054fa8960ac354e",
                  "status": "unaffected"
                },
                {
                  "at": "696fdec922661d4a3cc528fc34bc24fae8d4ad8a",
                  "status": "unaffected"
                }
              ]
            }
          ]
        },
        {
          "vendor": "Erlang",
          "product": "OTP",
          "packageName": "inets",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5.10",
              "status": "affected",
              "versionType": "otp",
              "lessThan": "7.0"
            }
          ]
        },
        {
          "vendor": "Erlang",
          "product": "OTP",
          "packageName": "tftp",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.0",
              "status": "affected",
              "versionType": "otp",
              "lessThan": "*",
              "changes": [
                {
                  "at": "1.1.1.1",
                  "status": "unaffected"
                },
                {
                  "at": "1.2.2.1",
                  "status": "unaffected"
                },
                {
                  "at": "1.2.4",
                  "status": "unaffected"
                }
              ]
            }
          ]
        }
      ]
    }
  }
}