Security advisory

{
  "id": "ced5ebf14dcd9c3f7378794053b763680cedb4e42352c328450c6dac68f4c890",
  "url": "https://osv.dev/vulnerability/CVE-2021-27515",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-27515",
    "summary": "url-parse before 1.5.0 mishandles certain uses of backslash such as http:\\/ and interprets the URI as a relative path.",
    "evidence": "osv:CVE-2021-27515",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-27515",
      "aliases": [
        "CVE-2021-27515",
        "GHSA-9m6j-fcg5-2442"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/unshiftio/url-parse",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "267a0c6f7ef1a58271be61611c5103daace602c9"
                },
                {
                  "fixed": "d1e7e8822f26e8a49794b757123b51386325b2b0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:url-parse_project:url-parse:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.5.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d1e7e8822f26e8a49794b757123b51386325b2b0"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.4.7",
            "1.4.6",
            "1.4.5",
            "1.4.4",
            "1.4.3",
            "1.4.2",
            "1.4.1",
            "1.4.0",
            "1.3.0",
            "1.2.0",
            "1.1.9",
            "1.1.8",
            "1.1.7",
            "1.1.6",
            "1.1.5",
            "1.1.4",
            "1.1.3",
            "1.1.2",
            "1.1.1",
            "1.1.0",
            "1.0.5",
            "1.0.4",
            "1.0.3",
            "1.0.2",
            "1.0.1",
            "1.0.0",
            "0.2.3",
            "0.2.2",
            "0.2.1",
            "0.2",
            "0.1.5",
            "0.1.4",
            "0.1.3",
            "0.1.2",
            "0.1.1",
            "0.1.0",
            "0.1",
            "0.0.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27515.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:35.299175754Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2023/02/msg00030.html",
        "https://github.com/unshiftio/url-parse/commit/d1e7e8822f26e8a49794b757123b51386325b2b0",
        "https://github.com/unshiftio/url-parse/compare/1.4.7...1.5.0",
        "https://github.com/unshiftio/url-parse/pull/197",
        "https://advisory.checkmarx.net/advisory/CX-2021-4306"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-27515",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385676,
  "published_at": "2021-02-22T00:15:12.543+00:00"
}