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nodejs — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2020-8201

Node.js < 12.18.4 and < 14.11 can be exploited to perform HTTP desync attacks and deliver malicious payloads to unsuspecting users. The payloads can be crafted by an attacker to hijack user sessions, poison cookies, perform clickjacking, and a multitude of other attacks depending on the architecture of the underlying system. The attack was possible due to a bug in processing of carrier-return symbols in the HTTP header names.

Products
nodejs
Affected versions
Not specified
Fixed versions
12.18.4~dfsg-1
CVEs
CVE-2020-8201
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 14:08 UTC · Revision 1

Source evidence

DEBIAN-CVE-2020-8201

core-osv · Original source

Published 18 Sept 2020, 21:15 UTC

Node.js < 12.18.4 and < 14.11 can be exploited to perform HTTP desync attacks and deliver malicious payloads to unsuspecting users. The payloads can be crafted by an attacker to hijack user sessions, poison cookies, perform clickjacking, and a multitude of other attacks depending on the architecture of the underlying system. The attack was possible due to a bug in processing of carrier-return symbols in the HTTP header names.

osv:DEBIAN-CVE-2020-8201

nodejs

Fixed versions: 12.18.4~dfsg-1

nodejs

Fixed versions: 12.18.4~dfsg-1

nodejs

Fixed versions: 12.18.4~dfsg-1

Complete source record
{
  "id": "cdc6e6ac6fcac8355b8ae9904aa872d47602670aa60556f7371f1a4214344e7c",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-8201",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2020-8201",
    "summary": "Node.js < 12.18.4 and < 14.11 can be exploited to perform HTTP desync attacks and deliver malicious payloads to unsuspecting users. The payloads can be crafted by an attacker to hijack user sessions, poison cookies, perform clickjacking, and a multitude of other attacks depending on the architecture of the underlying system. The attack was possible due to a bug in processing of carrier-return symbols in the HTTP header names.",
    "evidence": "osv:DEBIAN-CVE-2020-8201",
    "products": [
      {
        "name": {
          "value": "nodejs",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "12.18.4~dfsg-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "nodejs",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "12.18.4~dfsg-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "nodejs",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "12.18.4~dfsg-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2020-8201",
      "aliases": [
        "DEBIAN-CVE-2020-8201"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "12.18.4~dfsg-1"
                }
              ]
            }
          ],
          "package": {
            "name": "nodejs",
            "purl": "pkg:deb/debian/nodejs?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-8201.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "12.18.4~dfsg-1"
                }
              ]
            }
          ],
          "package": {
            "name": "nodejs",
            "purl": "pkg:deb/debian/nodejs?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-8201.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "12.18.4~dfsg-1"
                }
              ]
            }
          ],
          "package": {
            "name": "nodejs",
            "purl": "pkg:deb/debian/nodejs?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-8201.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T12:02:51.547610135Z",
      "provider": "osv",
      "upstream": [
        "CVE-2020-8201"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2020-8201"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2020-8201",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 453202,
  "published_at": "2020-09-18T21:15:12.903+00:00"
}