{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "5.0.0"
              },
              {
                "last_affected": "5.0.12"
              },
              {
                "introduced": "5.1.0"
              },
              {
                "last_affected": "5.1.9"
              },
              {
                "introduced": "5.2.0"
              },
              {
                "last_affected": "5.2.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "6feb3f329729d6c78f6544b542b1668a3e9f6704"
            },
            {
              "last_affected": "244f9e7d87f854961df930b2383a990999523be9"
            },
            {
              "introduced": "0112a830307b3e4480432c34cdaa66247fba2d74"
            },
            {
              "last_affected": "589d976bdd5456a6caf6f0cfafaadbc29873379e"
            },
            {
              "introduced": "a38832fbdabfa2fdb418988b9cc36831765a2ecd"
            },
            {
              "last_affected": "a38832fbdabfa2fdb418988b9cc36831765a2ecd"
            }
          ],
          "repo": "https://github.com/eclipse-vertx/vert.x",
          "type": "GIT"
        }
      ],
      "versions": [
        "5.2.0"
      ]
    }
  ],
  "aliases": [
    "GHSA-ch7p-g5pm-3gqx"
  ],
  "database_specific": {
    "cna_assigner": "eclipse",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102479.json"
  },
  "details": "In Eclipse Vert.x versions [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x HTTP/1.x decoder uses a canonicalization for well known HTTP headers, the canonicalization process interprets well crafted headers as headers of this list, allowing for instance Content-Xength to be interpeted as Content-Length.\n\n\n\nThis can be exploited for request smuggling purpose.\n\n\n\nThe impacted component is io.vertx:vertx-core.",
  "id": "CVE-2026-102479",
  "modified": "2026-10-16T02:31:02.683168826Z",
  "published": "2026-10-14T18:43:54.623Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://gitlab.eclipse.org/security/cve-assignment/-/work_items/352"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102479.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/eclipse-vertx/vert.x/security/advisories/GHSA-ch7p-g5pm-3gqx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102479"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ]
}