CVE-2026-8034 Server-side request forgery vulnerability in GitHub Enterprise Server notebook viewer via URL parser confusion

[
  {
    "vendor": "GitHub",
    "product": "Enterprise Server",
    "versions": [
      {
        "status": "affected",
        "version": "3.16.0",
        "lessThanOrEqual": "3.16.17",
        "changes": [
          {
            "at": "3.16.18",
            "status": "unaffected"
          }
        ],
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.17.0",
        "lessThanOrEqual": "3.17.14",
        "changes": [
          {
            "at": "3.17.15",
            "status": "unaffected"
          }
        ],
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.18.0",
        "lessThanOrEqual": "3.18.8",
        "changes": [
          {
            "at": "3.18.9",
            "status": "unaffected"
          }
        ],
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.19.0",
        "lessThanOrEqual": "3.19.5",
        "changes": [
          {
            "at": "3.19.6",
            "status": "unaffected"
          }
        ],
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.20.0",
        "lessThanOrEqual": "3.20.1",
        "changes": [
          {
            "at": "3.20.2",
            "status": "unaffected"
          }
        ],
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "3.21.0",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "affected"
  }
]