Security advisory

{
  "id": "4e21a0cbe5e809a680f735d92eacff8bf0f48f625e4e09c639019339473f9c48",
  "url": "https://osv.dev/vulnerability/CVE-2021-27516",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-27516",
    "summary": "URI.js (aka urijs) before 1.19.6 mishandles certain uses of backslash such as http:\\/ and interprets the URI as a relative path.",
    "evidence": "osv:CVE-2021-27516",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-27516",
      "aliases": [
        "CVE-2021-27516",
        "GHSA-p6j9-7xhc-rhwp"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/medialize/uri.js",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "46c8ac0c7e6997daad8ff6859784b39f8892fa97"
                },
                {
                  "fixed": "a1ad8bcbc39a4d136d7e252e76e957f3ece70839"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:uri.js_project:uri.js:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.19.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a1ad8bcbc39a4d136d7e252e76e957f3ece70839"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "46c8ac0c7e6997daad8ff6859784b39f8892fa97"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.19.6"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.19.5",
            "v1.19.4",
            "v1.19.3",
            "v1.19.2",
            "v1.19.1",
            "v1.19.0",
            "v1.18.12",
            "v1.18.11",
            "v1.18.10",
            "v1.18.9",
            "v1.18.8",
            "v1.18.7",
            "v1.18.6",
            "v1.18.5",
            "v1.18.4",
            "v1.18.3",
            "v1.18.2",
            "v1.18.1",
            "v1.18.0",
            "v1.17.1",
            "v1.17.0",
            "v1.16.0",
            "v1.15.2",
            "v1.15.1",
            "v.1.15.1",
            "v1.15.0",
            "v1.14.0",
            "v1.13.2",
            "v1.13.1",
            "v1.13.0",
            "v1.12.1",
            "v1.12.0",
            "v1.10.2",
            "v1.10.1",
            "v1.10.0",
            "v1.9.1",
            "v1.9.0",
            "v1.8.3",
            "v1.8.2",
            "v1.8.1",
            "v1.8.0",
            "v1.7.4",
            "v1.7.3",
            "v1.7.2",
            "v1.7.1",
            "v1.7.0",
            "v1.6.3",
            "v1.6.2",
            "v1.6.1",
            "v1.6.0",
            "v1.5.0",
            "v1.4.3",
            "v1.4.2",
            "v1.4.1",
            "v1.4.0",
            "v1.3.1",
            "v1.3.0",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27516.json"
          }
        }
      ],
      "modified": "2026-10-20T10:47:52.406771441Z",
      "provider": "osv",
      "references": [
        "https://github.com/medialize/URI.js/releases/tag/v1.19.6",
        "https://github.com/medialize/URI.js/commit/a1ad8bcbc39a4d136d7e252e76e957f3ece70839",
        "https://advisory.checkmarx.net/advisory/CX-2021-4305"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-27516",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 379798,
  "published_at": "2021-02-22T00:15:12.62+00:00"
}