data/cve/v5/GO-2026-6602.json

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.0",
  "cveMetadata": {
    "cveId": "CVE-2026-94447"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc"
      },
      "title": "Checksum database bypass for golang.org/toolchain in cmd/go",
      "descriptions": [
        {
          "lang": "en",
          "value": "Previously, a user operating inside of a malicious Go project that defines a bogus golang.org/toolchain go.sum entry and operates a malicious GOMODPROXY the user chooses to use can bypass the intended checksum. We now ensure that golang.org/toolchain always goes to the network for the canonical checksum."
        }
      ],
      "affected": [
        {
          "vendor": "Go toolchain",
          "product": "cmd/go",
          "collectionURL": "https://pkg.go.dev",
          "packageName": "cmd/go",
          "versions": [
            {
              "version": "0",
              "lessThan": "1.26.9",
              "status": "affected",
              "versionType": "semver"
            },
            {
              "version": "1.27.0-0",
              "lessThan": "1.27.2",
              "status": "affected",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-354: Improper Validation of Integrity Check Value"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://go.dev/cl/840785"
        },
        {
          "url": "https://go.dev/issue/81834"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/U2fTuyDJznI"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-6602"
        }
      ]
    }
  }
}