CVE-2025-56200

MEDIUM EPSS 22.6%
Published Sep 30, 20259mo ago · Modified Jun 17, 20262w ago
6.1 CVSS 3.1
Medium
Find Similar
Published Sep 30, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
6.1
Exploitability
2.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
22.6% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
validator_projectvalidator* ≤3.15.15

References 4

  • validatorjs.com http://validatorjs.com
    Broken Link
  • gist.github.com https://gist.github.com/junan-98/27ae092aa40e2a057d41a0f95148f666
    ExploitThird Party Advisory
  • gist.github.com https://gist.github.com/junan-98/a93130505b258b9e4ec9f393e7533596
    ExploitThird Party Advisory
  • github.com https://github.com/validatorjs/validator.js
    Product

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.