CVE-2026-2266 Improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed cross-site scripting via task list content and enabled arbitrary HTML injection

[
  {
    "vendor": "GitHub",
    "product": "Enterprise Server",
    "versions": [
      {
        "status": "affected",
        "version": "3.18.0",
        "lessThanOrEqual": "3.18.5",
        "changes": [
          {
            "at": "3.18.6",
            "status": "unaffected"
          }
        ],
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "3.19.0",
        "lessThanOrEqual": "3.19.2",
        "changes": [
          {
            "at": "3.19.3",
            "status": "unaffected"
          }
        ],
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]