{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.0",
  "cveMetadata": {
    "cveId": "CVE-2026-42508"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc"
      },
      "title": "Invoking  auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts",
      "descriptions": [
        {
          "lang": "en",
          "value": "Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked."
        }
      ],
      "affected": [
        {
          "vendor": "golang.org/x/crypto",
          "product": "golang.org/x/crypto/ssh/knownhosts",
          "collectionURL": "https://pkg.go.dev",
          "packageName": "golang.org/x/crypto/ssh/knownhosts",
          "versions": [
            {
              "version": "0",
              "lessThan": "0.52.0",
              "status": "affected",
              "versionType": "semver"
            }
          ],
          "programRoutines": [
            {
              "name": "hostKeyDB.IsRevoked"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-295: Improper Certificate Validation"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://go.dev/issue/79568"
        },
        {
          "url": "https://go.dev/cl/781220"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-5021"
        }
      ]
    }
  }
}