{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.19.4"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "bf04ec5f053829f9ea3a887608bdfca4fd84cd64"
            },
            {
              "fixed": "b02bf037c99ac9316b77ff8bfd840e90becf1155"
            }
          ],
          "repo": "https://github.com/medialize/uri.js",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "URI.js is a javascript URL mutation library (npm package urijs). In URI.js before version 1.19.4, the hostname can be spoofed by using a backslash (`\\`) character followed by an at (`@`) character. If the hostname is used in security decisions, the decision may be incorrect. Depending on library usage and attacker intent, impacts may include allow/block list bypasses, SSRF attacks, open redirects, or other undesired behavior. For example the URL `https://expected-example.com\\@observed-example.com` will incorrectly return `observed-example.com` if using an affected version. Patched versions correctly return `expected-example.com`. Patched versions match the behavior of other parsers which implement the WHATWG URL specification, including web browsers and Node's built-in URL class. Version 1.19.4 is patched against all known payload variants. Version 1.19.3 has a partial patch but is still vulnerable to a payload variant.]",
  "id": "CVE-2020-26291",
  "modified": "2026-04-01T23:09:45.573978361Z",
  "published": "2020-12-31T00:15:12.327Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.npmjs.com/package/urijs"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/medialize/URI.js/releases/tag/v1.19.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/medialize/URI.js/security/advisories/GHSA-3329-pjwv-fjpg"
    },
    {
      "type": "FIX",
      "url": "https://github.com/medialize/URI.js/commit/b02bf037c99ac9316b77ff8bfd840e90becf1155"
    }
  ],
  "related": [
    "GHSA-3329-pjwv-fjpg"
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}