{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.6.1"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.7.0-beta2"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "63ef75ec9c2e286d580326997328e4a90140b57e"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "5a3895c5c9141af225644e307228ec1d92db52db"
            }
          ],
          "repo": "https://github.com/h2o/h2o",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "CRLF injection vulnerability in the on_req function in lib/handler/redirect.c in H2O before 1.6.2 and 1.7.x before 1.7.0-beta3 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via a crafted URI.",
  "id": "CVE-2016-1133",
  "modified": "2026-03-13T21:57:31.076599594Z",
  "published": "2016-01-16T05:59:03.253Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://h2o.examp1e.net/vulnerabilities.html#CVE-2016-1133"
    },
    {
      "type": "ADVISORY",
      "url": "http://jvn.jp/en/jp/JVN45928828/index.html"
    },
    {
      "type": "ADVISORY",
      "url": "http://jvndb.jvn.jp/jvndb/JVNDB-2016-000003"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/h2o/h2o/issues/682"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/h2o/h2o/issues/684"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}