Cross-site scripting (XSS) is a security vulnerability found in web apps.
Attackers can inject client-side scripts, bypass access controls, and cause various effects, from nuisance to security risk.
XSS accounted for 84% of all security vulnerabilities in 2007.
XXS attacks involve injecting malicious code into a vulnerable website, which is then delivered to the user’s browser and can disrupt services or steal info.
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