{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.0.0"
              },
              {
                "last_affected": "4.5.29"
              },
              {
                "introduced": "5.0.0"
              },
              {
                "last_affected": "5.1.4"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "60a85baf9138c1cf7e816587d9f59a70ed55bcf3"
            },
            {
              "last_affected": "b7545753dacac2add45c443574a5d1de13e2e805"
            },
            {
              "introduced": "6feb3f329729d6c78f6544b542b1668a3e9f6704"
            },
            {
              "last_affected": "753360696b3cbb3b6848a03f07a84f07f045da96"
            }
          ],
          "repo": "https://github.com/eclipse-vertx/vert.x",
          "type": "GIT"
        },
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "4.5.29"
              },
              {
                "introduced": "5.0.0"
              },
              {
                "last_affected": "5.1.4"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0dc2b837dfb99d8a179fafb1b348a4843ab00e3d"
            },
            {
              "introduced": "a62720242d2f515969aa34dd185d870b846be5e1"
            },
            {
              "last_affected": "c248720fd671d3d33a57ce72c37603989ccd2efc"
            }
          ],
          "repo": "https://github.com/vert-x3/vertx-web",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "eclipse",
    "cwe_ids": [
      "CWE-200",
      "CWE-346"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/15xxx/CVE-2026-15075.json"
  },
  "details": "In Eclipse Vert.x versions up to and including 4.5.29 (4.x branch) and 5.1.4 (5.x branch), DefaultRedirectHandler (vertx-core) propagates all request headers as-is across cross-origin HTTP 30x redirects. Only Content-Length is stripped; no origin comparison (scheme, host, port) is performed before copying headers to the redirect target.\nAs a result, credential headers, including Authorization, Cookie, Proxy-Authorization, and arbitrary custom headers such as X-API-Token, are forwarded to the redirect destination without the caller's knowledge.\n\n\n\n\nAn attacker who can cause a Vert.x HttpClient to issue a request that is redirected to an attacker-controlled host (for example, by supplying a URL to a webhook dispatcher, image proxy, or microservice URL fetcher) can capture bearer tokens, basic-auth credentials, session cookies, and API keys attached to the original request.",
  "id": "CVE-2026-15075",
  "modified": "2026-07-16T03:31:17.611849297Z",
  "published": "2026-07-14T08:15:53.650Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://gitlab.eclipse.org/security/cve-assignment/-/work_items/161"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/15xxx/CVE-2026-15075.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15075"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/eclipse-vertx/vert.x"
    }
  ],
  "schema_version": "1.8.0",
  "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"
    }
  ]
}