CVE-2025-56200

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.

Weakness classification

• CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Primary references

• cve@mitre.org — Exploit, Third Party Advisory
• cve@mitre.org — Exploit, Third Party Advisory
• cve@mitre.org — Product