{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:oracle:graalvm:20.3.4:*:*:*:enterprise:*:*:*",
              "cpe:2.3:a:oracle:graalvm:21.3.0:*:*:*:enterprise:*:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "20.3.4"
              },
              {
                "last_affected": "20.3.4"
              },
              {
                "introduced": "21.3.0"
              },
              {
                "last_affected": "21.3.0"
              }
            ],
            "source": "CPE_STRING"
          },
          "events": [
            {
              "introduced": "9e3645fe9e0c84e1350c4b88cfb9fdf432c97fce"
            },
            {
              "last_affected": "2b9eb103d1668cf5eac22fe85bdad7513681d9e3"
            }
          ],
          "repo": "https://github.com/graalvm/graalvm-ce-builds",
          "type": "GIT"
        }
      ],
      "versions": [
        "20.3.4",
        "21.3.0"
      ]
    },
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:llhttp:llhttp:*:*:*:*:*:node.js:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.1.4"
              },
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "6.0.6"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d6ea943d8d1c5092f4bf6e10a6a32cfb2dbeaae3"
            },
            {
              "introduced": "c6a35cccf5c8b36f82036c23cf9c50a7dc2dbd0a"
            },
            {
              "fixed": "69d6db2008508489d19267a0dcab30602b16fc5b"
            }
          ],
          "repo": "https://github.com/nodejs/llhttp",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "11.0"
          },
          {
            "last_affected": "11.0"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "debian:debian_linux"
      }
    ]
  },
  "details": "The parser in accepts requests with a space (SP) right after the header name before the colon. This can lead to HTTP Request Smuggling (HRS) in llhttp \u003c v2.1.4 and \u003c v6.0.6.",
  "id": "CVE-2021-22959",
  "modified": "2026-07-08T05:38:17.901214364Z",
  "published": "2021-11-15T15:15:06.747Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.debian.org/security/2022/dsa-5170"
    },
    {
      "type": "REPORT",
      "url": "https://hackerone.com/reports/1238709"
    },
    {
      "type": "FIX",
      "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}