data/cve/v5/GO-2026-6180.json

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.0",
  "cveMetadata": {
    "cveId": "CVE-2026-56864"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc"
      },
      "title": "Ignore unrelated, unauthenticated hashes in Lookup in golang.org/x/mod/sumdb",
      "descriptions": [
        {
          "lang": "en",
          "value": "A malicious GOSUMDB was capable of serving arbitrary module content not contained within the transparency log. This attack allows for a coordinating GOPROXY and GOSUMDB to serve a client malicious module content that cannot be detected by evaluating the transparency log. In order to determine if you have been affected:   rm -r go.sum go.work.sum vendor/ \u0026\u0026 go mod tidy"
        }
      ],
      "affected": [
        {
          "vendor": "Go toolchain",
          "product": "cmd/go",
          "collectionURL": "https://pkg.go.dev",
          "packageName": "cmd/go",
          "versions": [
            {
              "version": "0",
              "lessThan": "1.25.13",
              "status": "affected",
              "versionType": "semver"
            },
            {
              "version": "1.26.0-0",
              "lessThan": "1.26.6",
              "status": "affected",
              "versionType": "semver"
            },
            {
              "version": "1.27.0-0",
              "lessThan": "1.27.0-rc.3",
              "status": "affected",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "golang.org/x/mod",
          "product": "golang.org/x/mod/sumdb",
          "collectionURL": "https://pkg.go.dev",
          "packageName": "golang.org/x/mod/sumdb",
          "versions": [
            {
              "version": "0",
              "lessThan": "0.40.0",
              "status": "affected",
              "versionType": "semver"
            }
          ],
          "programRoutines": [
            {
              "name": "Client.Lookup"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-347: Improper Verification of Cryptographic Signature"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://go.dev/issue/80745"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/94pEornpRlI"
        },
        {
          "url": "https://go.dev/cl/815000"
        },
        {
          "url": "https://go.dev/cl/815020"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-6180"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "mundur"
        }
      ]
    }
  }
}