data/osv/GO-2026-5015.json

{
  "schema_version": "1.3.1",
  "id": "GO-2026-5015",
  "modified": "0001-01-01T00:00:00Z",
  "published": "0001-01-01T00:00:00Z",
  "aliases": [
    "CVE-2026-39835"
  ],
  "summary": "Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh",
  "details": "SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.",
  "affected": [
    {
      "package": {
        "name": "golang.org/x/crypto",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.52.0"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "golang.org/x/crypto/ssh",
            "symbols": [
              "CertChecker.Authenticate",
              "CertChecker.CheckHostKey"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "REPORT",
      "url": "https://go.dev/issue/79563"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
    },
    {
      "type": "FIX",
      "url": "https://go.dev/cl/781660"
    }
  ],
  "credits": [
    {
      "name": "NCC Group Cryptography Services, sponsored by Teleport"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2026-5015",
    "review_status": "REVIEWED"
  }
}