{
  "schema_version": "1.5.0",
  "id": "CURL-CVE-2026-94265",
  "aliases": [
    "CVE-2026-94265"
  ],
  "summary": "Authorization: Negotiate sent to foreign origin",
  "modified": "2026-09-21T16:23:00.00Z",
  "database_specific": {
    "package": "curl",
    "affects": "both",
    "URL": "https://curl.se/docs/CVE-2026-94265.json",
    "www": "https://curl.se/docs/CVE-2026-94265.html",
    "issue": "https://hackerone.com/reports/4040551",
    "CWE": {
      "id": "CWE-200",
      "desc": "Exposure of Sensitive Information to an Unauthorized Actor"
    },
    "last_affected": "8.22.0",
    "severity": "Low"
  },
  "published": "2026-10-14T08:00:00.00Z",
  "affected": [
    {
      "ranges": [
        {
           "type": "SEMVER",
           "events": [
             {"introduced": "8.21.0"},
             {"fixed": "8.23.0"}
           ]
        },
        {
           "type": "GIT",
           "repo": "https://github.com/curl/curl.git",
           "events": [
             {"introduced": "8f71d0fde515aa4c68002477356c35bd79927729"},
             {"fixed": "557a52f21e37a626725a9e708c02af129c3ece1b"}
           ]
        }
      ],
      "versions": [
        "8.22.0", "8.21.0"
      ]
    }
  ],
  "credits": [
    {
      "name": "Joshua Rogers (Aisle Research)",
      "type": "FINDER"
    },
    {
      "name": "Joshua Rogers (Aisle Research)",
      "type": "REMEDIATION_DEVELOPER"
    }
  ],
  "details": "When processing an HTTP redirect to a URL containing userinfo (a\n`username:password` component), curl might erroneously retain and re-transmit\nthe original host's HTTP Negotiate authentication state. Consequently, a\nmalicious server can trigger a redirect containing arbitrary userinfo to force\ncurl to send a freshly minted Kerberos ticket—generated using the ambient\nidentity of the client process to an untrusted third-party host, effectively\nbypassing the domain-scoping restrictions normally enforced by the absence of\n`--location-trusted`."
}