Reflected Cross-Site Scripting (XSS) is a vulnerability where malicious scripts are injected into a web application and executed in the victim's browser by tricking them into clicking a crafted link or submitting data.
Bypass:
Weak Input Validation: Encoding payloads to evade filters (e.g., using HTML entities or Unicode).
Misconfigured WAFs: Exploiting poorly tuned Web Application Firewalls.
Chained Vulnerabilities: Combining with other weaknesses like improper content type enforcement.
Impact:
Data Theft: Stealing cookies, session tokens, or sensitive information.
Phishing: Displaying fake login forms.
Account Takeover: Hijacking user sessions.
Malware Injection: Redirecting victims to malicious websites.
Mitigation: Use proper input validation, output encoding, and Content Security Policies (CSP).
Bypass:
Weak Input Validation: Encoding payloads to evade filters (e.g., using HTML entities or Unicode).
Misconfigured WAFs: Exploiting poorly tuned Web Application Firewalls.
Chained Vulnerabilities: Combining with other weaknesses like improper content type enforcement.
Impact:
Data Theft: Stealing cookies, session tokens, or sensitive information.
Phishing: Displaying fake login forms.
Account Takeover: Hijacking user sessions.
Malware Injection: Redirecting victims to malicious websites.
Mitigation: Use proper input validation, output encoding, and Content Security Policies (CSP).
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