CVE-2021-22960 (GCVE-0-2021-22960)

Vulnerability from cvelistv5 – Published: 2021-11-03 19:22 – Updated: 2025-04-30 22:24
VLAI
Summary
The parse function in llhttp < 2.1.4 and < 6.0.6. ignores chunk extensions when parsing the body of chunked requests. This leads to HTTP Request Smuggling (HRS) under certain conditions.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-444 - HTTP Request Smuggling (CWE-444)
Assigner
References
Impacted products
Vendor Product Version
NodeJS Node Affected: 4.0 , < 4.* (semver)
Affected: 5.0 , < 5.* (semver)
Affected: 6.0 , < 6.* (semver)
Affected: 7.0 , < 7.* (semver)
Affected: 8.0 , < 8.* (semver)
Affected: 9.0 , < 9.* (semver)
Affected: 10.0 , < 10.* (semver)
Affected: 11.0 , < 11.* (semver)
Affected: 12.0 , < 12.22.7 (semver)
Affected: 13.0 , < 13.* (semver)
Affected: 14.0 , < 14.18.1 (semver)
Affected: 15.0 , < 15.* (semver)
Affected: 16.0 , < 16.11.1 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:58:26.117Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/1238099"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
          },
          {
            "name": "DSA-5170",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2022/dsa-5170"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Node",
          "vendor": "NodeJS",
          "versions": [
            {
              "lessThan": "4.*",
              "status": "affected",
              "version": "4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.*",
              "status": "affected",
              "version": "5.0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.*",
              "status": "affected",
              "version": "6.0",
              "versionType": "semver"
            },
            {
              "lessThan": "7.*",
              "status": "affected",
              "version": "7.0",
              "versionType": "semver"
            },
            {
              "lessThan": "8.*",
              "status": "affected",
              "version": "8.0",
              "versionType": "semver"
            },
            {
              "lessThan": "9.*",
              "status": "affected",
              "version": "9.0",
              "versionType": "semver"
            },
            {
              "lessThan": "10.*",
              "status": "affected",
              "version": "10.0",
              "versionType": "semver"
            },
            {
              "lessThan": "11.*",
              "status": "affected",
              "version": "11.0",
              "versionType": "semver"
            },
            {
              "lessThan": "12.22.7",
              "status": "affected",
              "version": "12.0",
              "versionType": "semver"
            },
            {
              "lessThan": "13.*",
              "status": "affected",
              "version": "13.0",
              "versionType": "semver"
            },
            {
              "lessThan": "14.18.1",
              "status": "affected",
              "version": "14.0",
              "versionType": "semver"
            },
            {
              "lessThan": "15.*",
              "status": "affected",
              "version": "15.0",
              "versionType": "semver"
            },
            {
              "lessThan": "16.11.1",
              "status": "affected",
              "version": "16.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The parse function in llhttp \u003c 2.1.4 and \u003c 6.0.6. ignores chunk extensions when parsing the body of chunked requests. This leads to HTTP Request Smuggling (HRS) under certain conditions."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-444",
              "description": "HTTP Request Smuggling (CWE-444)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-04-30T22:24:38.152Z",
        "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "shortName": "hackerone"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackerone.com/reports/1238099"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
        },
        {
          "name": "DSA-5170",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2022/dsa-5170"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "support@hackerone.com",
          "ID": "CVE-2021-22960",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "https://github.com/nodejs/llhttp",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "Fixed in v2.1.4 and v6.0.6"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The parse function in llhttp \u003c 2.1.4 and \u003c 6.0.6. ignores chunk extensions when parsing the body of chunked requests. This leads to HTTP Request Smuggling (HRS) under certain conditions."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "HTTP Request Smuggling (CWE-444)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://hackerone.com/reports/1238099",
              "refsource": "MISC",
              "url": "https://hackerone.com/reports/1238099"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujan2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
            },
            {
              "name": "DSA-5170",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2022/dsa-5170"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "cveId": "CVE-2021-22960",
    "datePublished": "2021-11-03T19:22:42.000Z",
    "dateReserved": "2021-01-06T00:00:00.000Z",
    "dateUpdated": "2025-04-30T22:24:38.152Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-22960",
      "date": "2026-07-12",
      "epss": "0.02299",
      "percentile": "0.81279"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-22960\",\"sourceIdentifier\":\"support@hackerone.com\",\"published\":\"2021-11-03T20:15:08.247\",\"lastModified\":\"2024-11-21T05:51:01.460\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The parse function in llhttp \u003c 2.1.4 and \u003c 6.0.6. ignores chunk extensions when parsing the body of chunked requests. This leads to HTTP Request Smuggling (HRS) under certain conditions.\"},{\"lang\":\"es\",\"value\":\"La funci\u00f3n parse en llhttp versiones anteriores a  2.1.4 y versiones anteriores a 6.0.6. ignora las extensiones chunk cuando analiza el cuerpo de las peticiones chunked. Esto conlleva a un Contrabando de Peticiones HTTP (HRS) bajo determinadas condiciones\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":2.5}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:P/A:N\",\"baseScore\":5.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":4.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"support@hackerone.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-444\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-444\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:llhttp:llhttp:*:*:*:*:*:node.js:*:*\",\"versionEndExcluding\":\"2.1.4\",\"matchCriteriaId\":\"6B7CB576-CA48-462E-A360-6CE14FADCC6A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:llhttp:llhttp:*:*:*:*:*:node.js:*:*\",\"versionStartIncluding\":\"3.0.0\",\"versionEndExcluding\":\"6.0.6\",\"matchCriteriaId\":\"AF1511BB-A1F0-4AF9-80C3-5EB6317F8525\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:graalvm:20.3.4:*:*:*:enterprise:*:*:*\",\"matchCriteriaId\":\"9F300E13-1B40-4B35-ACA5-4D402CD41055\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:graalvm:21.3.0:*:*:*:enterprise:*:*:*\",\"matchCriteriaId\":\"B10E38A6-783C-45A2-98A1-12FA1EB3D3AA\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]}],\"references\":[{\"url\":\"https://hackerone.com/reports/1238099\",\"source\":\"support@hackerone.com\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2022/dsa-5170\",\"source\":\"support@hackerone.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujan2022.html\",\"source\":\"support@hackerone.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://hackerone.com/reports/1238099\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2022/dsa-5170\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujan2022.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T11:46:51+00:00",
      "cve": "CVE-2021-22960",
      "id": "CVE-2021-22960",
      "initial_release_date": "2021-10-12T00:00:00+00:00",
      "product_status:fixed": "242",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "6",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "llhttp: HTTP Request Smuggling when parsing the body of chunked requests",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-22960.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.