We covered and explained Javascript validation Bypass using OWASP WebGoat free lab.

Client-side Validation (CSV) Bypass | Javascript validation Bypass

The term “bypass” describes a technique for getting around the client-side validation tests that online applications run, like in the user’s web browser, without raising any red flags or error messages. This is usually accomplished by altering or changing the data that is transferred from the client-side to the server-side in order to get around or get past the implemented validation checks.

A few popular methods for getting around client-side validation are editing HTML code, changing form data with JavaScript, and intercepting HTTP requests with proxies. Attackers may utilize these methods to circumvent security measures, obtain unauthorized access to private information or resources, or perform other nefarious deeds.

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