{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "cmd/go",
          "product": "cmd/go",
          "vendor": "Go toolchain",
          "versions": [
            {
              "lessThan": "1.25.10",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.26.3",
              "status": "affected",
              "version": "1.26.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Harshit Gupta (Mr HAX)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The \"go tool pack\" subcommand (usually used only by the compiler as an internal tool with known-good inputs) does not sanitize output filenames. Extracting a malicious archive file with the \"pack\" subcommand can write files to arbitrary locations on the filesystem."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-07T19:41:18.993Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/issue/78778"
        },
        {
          "url": "https://go.dev/cl/767520"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4979"
        }
      ],
      "title": "Invoking \"go tool pack\" does not sanitize output paths in cmd/go"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-39817",
    "datePublished": "2026-05-07T19:41:18.993Z",
    "dateReserved": "2026-04-07T18:13:03.524Z",
    "dateUpdated": "2026-05-07T19:41:18.993Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-39817",
      "date": "2026-05-08",
      "epss": "0.00027",
      "percentile": "0.07687"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-39817\",\"sourceIdentifier\":\"security@golang.org\",\"published\":\"2026-05-07T20:16:42.983\",\"lastModified\":\"2026-05-07T20:38:04.860\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The \\\"go tool pack\\\" subcommand (usually used only by the compiler as an internal tool with known-good inputs) does not sanitize output filenames. Extracting a malicious archive file with the \\\"pack\\\" subcommand can write files to arbitrary locations on the filesystem.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://go.dev/cl/767520\",\"source\":\"security@golang.org\"},{\"url\":\"https://go.dev/issue/78778\",\"source\":\"security@golang.org\"},{\"url\":\"https://groups.google.com/g/golang-announce/c/qcCIEXso47M\",\"source\":\"security@golang.org\"},{\"url\":\"https://pkg.go.dev/vuln/GO-2026-4979\",\"source\":\"security@golang.org\"}]}}"
  }
}