cve-2025-56200
Vulnerability from cvelistv5
Published
2025-09-30 00:00
Modified
2025-09-30 17:35
Severity ?
Summary
A URL validation bypass vulnerability exists in validator.js through version 13.15.15. The isURL() function uses '://' as a delimiter to parse protocols, while browsers use ':' as the delimiter. This parsing difference allows attackers to bypass protocol and domain validation by crafting URLs leading to XSS and Open Redirect attacks.
Impacted products
n/an/a
Show details on NVD website


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  "containers": {
    "cna": {
      "affected": [
        {
          "product": "n/a",
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          "versions": [
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              "version": "n/a"
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      "descriptions": [
        {
          "lang": "en",
          "value": "A URL validation bypass vulnerability exists in validator.js through version 13.15.15. The isURL() function uses \u0027://\u0027 as a delimiter to parse protocols, while browsers use \u0027:\u0027 as the delimiter. This parsing difference allows attackers to bypass protocol and domain validation by crafting URLs leading to XSS and Open Redirect attacks."
        }
      ],
      "problemTypes": [
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      "providerMetadata": {
        "dateUpdated": "2025-09-30T17:35:15.229Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
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          "url": "http://validatorjs.com"
        },
        {
          "url": "https://gist.github.com/junan-98/a93130505b258b9e4ec9f393e7533596"
        },
        {
          "url": "https://github.com/validatorjs/validator.js"
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          "url": "https://gist.github.com/junan-98/27ae092aa40e2a057d41a0f95148f666"
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  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2025-56200",
    "datePublished": "2025-09-30T00:00:00.000Z",
    "dateReserved": "2025-08-16T00:00:00.000Z",
    "dateUpdated": "2025-09-30T17:35:15.229Z",
    "state": "PUBLISHED"
  },
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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