CVE-2025-56200: XSS
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
validator.jsto a version that resolves this vulnerability.Fixed in 13.15.15
Event History
Frequently Asked Questions
What is the severity of CVE-2025-56200?
CVE-2025-56200 is classified as a critical vulnerability due to its potential to allow attackers to bypass important validation mechanisms.
How do I fix CVE-2025-56200?
To fix CVE-2025-56200, update validator.js to version 13.15.16 or later.
What is the impact of CVE-2025-56200?
The impact of CVE-2025-56200 includes the ability for attackers to bypass URL validation, potentially leading to security exploitation.
Is my application affected by CVE-2025-56200?
If your application uses validator.js version 13.15.15 or earlier, it is affected by CVE-2025-56200.
What should I do if I cannot update to a fixed version for CVE-2025-56200?
If you cannot update, consider implementing an alternative URL validation method or additional security measures to mitigate the risk associated with CVE-2025-56200.