Cross-Site Scripting (XSS) Explained: How a “Low Severity” Vulnerability Leads to Enterprise Compromise
This vulnerability is an XSS (Cross-Site Scripting), which enables JavaScript execution via user input. The root cause lies in insufficient input sanitization of URL parameters by the application, allowing malicious scripts to be injected through a seemingly innocuous 'Enable JavaScript and cookies' prompt. The attacker utilized this flaw to craft payloads that stole session cookies and executed arbitrary client-side code within the context of the vulnerable website. The impact includes information disclosure, unauthorized account takeover, and potential data breaches. The researcher received a bounty (amount undisclosed) for reporting the vulnerability. To remediate, validate and sanitize all user inputs to prevent XSS attacks, ensuring they only contain safe characters. Key lesson: Never trust user-provided input blindly; always validate and sanitize it before rendering on the client side. #BugBounty #Cybersecurity #XSS #InputSanitization #WebSecurity

https://medium.com/@Err0rr0rre./cross-site-scripting-xss-explained-how-a-low-severity-vulnerability-leads-to-enterprise-0912288727aa?source=rss------bug_bounty-5