The Ultimate Guide to Email Input Field Vulnerability Testing
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Summary
Email input fields are common targets for hackers looking to exploit vulnerabilities in web applications, with potential attacks ranging from XSS and SSRF to header injection and business logic flaws.
This article offers a detailed guide to testing email input field vulnerabilities, covering both basic and advanced techniques, with real-world examples for each scenario.
Key points include using an RFC822-compliant validator to assess how the application handles both valid and invalid email formats, and using these validators to check the strength of an application’s email validation logic, whether it conforms to the standard or contains weaknesses.
The article includes a number of sample test cases, such as a standard-format email address being marked as valid, and invalid email addresses being correctly identified as such.
Lastly, the article explains that addresses containing unusual characters, aside from the ”@” symbol, or using new domain names alike should also be validated according to the RFC822 standard to ensure system security.