An online security flaw known as cross-site scripting (XSS) enables an attacker to compromise user interactions with a susceptible application.
Account compromise, account termination, privilege escalation, malware infection might result from exploiting XSS against a user.
According to the experts, if an attacker can abuse an XSS vulnerability on a web page to execute arbitrary JavaScript in a user’s browser, the security of that vulnerable website or vulnerable web application and its users has been compromised. XSS is not the user’s problem like any other security vulnerability.
In an XSS attack, the attacker injects malicious code into the victim’s web page, which the user interprets as source code when they visit the client site. To direct users to the malicious website, attackers often use phishing or social engineering methods.
Stored XSS is a method used by attackers to inject malicious content, often JavaScript code, into the target application. The target application will permanently stored this malicious code, for instance in a database, if there is no input validation. The XSS attack malicious content is delivered to the victim’s browser as part of the HTML code when the victim accesses the compromised webpage in a browser.
A malicious script is reflected off of a web application and into the victim’s browser in reflected cross-site scripting (XSS) attacks, which are also referred to as non-persistent attacks.The link that initiates the script sends a request to a website that has a flaw that allows malicious scripts to be executed.
A type of client-side vulnerability known as DOM-based Cross-Site Scripting (DOM XSS) happens when an attacker can change a webpage’s Document Object Model (DOM) through malicious input, enabling the browser to run malicious scripts.
Use a Content Security Policy (CSP), validate all user-provided input to identify potentially malicious content, encode output to prevent malicious data from causing automatic browser execution, and use a web application vulnerability scanning tool to find XSS and other injection flaws in users’ applications in order to prevent XSS attacks.
