The lack of input validation turns into a method for gleaning sensitive information such as login credentials, browser cookies, and more via specially crafted URLs sent in email links, posted on message boards, etc. You can think of XSS as an open spam relay on your email server. A direct exploit may or may not exist (depending on the context) but it still creates liability issues that your business probably doesn't want to take on.
Here are some other useful on how to handle XSS issues:
- Finding cross-site scripting (XSS) application flaws checklist
Cross-site scripting (XSS) is a major concern, it can be unpredictable and requires multiple tools to test it. Expert Kevin Beaver sheds light on XSS issues and recommends tools.
- Website security improved, but more can be done
A study of website security finds that although efforts are being made to prevent well-known attacks such as XSS and SQL injection, threats of newer attacks are rising.
- Proactively stamp out XSS cross scripting errors
Web-based application development expert Dan Cornell explains how to proactively reduce cross site scripting and SQL injection vulnerabilities
Dig Deeper on Software Security Test Best Practices
Related Q&A from Kevin Beaver
While most mobile platforms provide levels of security from mobile cryptojacking, IT must still be aware of the risks and procedures to address an ... Continue Reading
Android Oreo replaced the allow unknown sources setting with a new feature that enables users to selectively install unknown apps. Kevin Beaver ... Continue Reading
Equifax's Apache Struts vulnerability was an example of a scan not being read correctly. Kevin Beaver explains vulnerability scans and how issues can... Continue Reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.