{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "12.1.0"
              },
              {
                "last_affected": "12.1.12"
              },
              {
                "introduced": "12.0.0"
              },
              {
                "last_affected": "12.0.38"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "c8372b65bd15404de1444d68902c0455a3a69b64"
            },
            {
              "last_affected": "99a51624fd3b9f5f387fce44b628abf0b491f432"
            },
            {
              "introduced": "28100e8da711e44c0722ed10bd413ae862497539"
            },
            {
              "last_affected": "bdf87d35991b6459dec358c6012412e329f110b3"
            }
          ],
          "repo": "https://github.com/jetty/jetty.project",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-r2c5-3p8g-wpvw"
  ],
  "database_specific": {
    "cna_assigner": "eclipse",
    "cwe_ids": [
      "CWE-200"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77711.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "11.0.0"
          },
          {
            "last_affected": "11.0.32"
          },
          {
            "introduced": "10.0.0"
          },
          {
            "last_affected": "10.0.32"
          },
          {
            "introduced": "9.4.0"
          },
          {
            "last_affected": "9.4.64"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "When Jetty's `HttpClient` make a request to a server through a forward proxy, the server may reply with a 407 (Proxy Authentication Required).\n\n\n\nThe client mistakenly interprets the 407 as coming from the proxy, so it re-sends the request with the `Proxy-Authentication` header, which arrives to the server, that now has access to the proxy credentials.",
  "id": "CVE-2026-77711",
  "modified": "2026-10-16T02:30:55.043636448Z",
  "published": "2026-10-15T08:51:48.066Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77711.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/jetty/jetty.project/security/advisories/GHSA-r2c5-3p8g-wpvw"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.eclipse.org/security/cve-assignment/-/work_items/238"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77711"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ]
}