{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.5.0"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.5.0-NA"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.5.0-rc1"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.5.0-rc2"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.5.0-rc3"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.5.0-rc4"
              },
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.5.0-rc5"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "f3fa070f9bef5bdbc10f72915701e86fd5a3b6c2"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "f3fa070f9bef5bdbc10f72915701e86fd5a3b6c2"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "0d47738b6c129f556c67eba4358c061d062bba6e"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "42ccfaab129506c80f989a2f239b99dd6bd75ef3"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "2ea7eae744b93e9aaa5c297285fee332f2e89e3a"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "7d8e3fa1735073f041bbd175053cc62dc5983548"
            },
            {
              "introduced": "0"
            },
            {
              "last_affected": "a71750f9a6d3ab3306b255ab4fc3a514adab6f2f"
            }
          ],
          "repo": "https://github.com/litespeedtech/openlitespeed",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "The server in LiteSpeed OpenLiteSpeed before 1.5.0 RC6 does not correctly handle requests for byte sequences, allowing an attacker to amplify the response size by requesting the entire response body repeatedly, as demonstrated by an HTTP Range header value beginning with the \"bytes=0-,0-\" substring.",
  "id": "CVE-2018-19791",
  "modified": "2026-03-13T21:51:05.958271872Z",
  "published": "2018-12-03T06:29:00.400Z",
  "references": [
    {
      "type": "EVIDENCE",
      "url": "https://github.com/litespeedtech/openlitespeed/issues/117"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}