What is Cross-Site Scripting in Cybersecurity?
'Cross-site scripting' is also said in full.
A web vulnerability that lets attackers inject malicious JavaScript into pages viewed by other users. Stored XSS persists in the database. Reflected XSS bounces off the server in a URL parameter. DOM-based XSS manipulates the page's client-side code. All three steal session tokens, redirect users, or deface pages.
Why Cross-Site Scripting Matters for Your Cybersecurity Career
XSS is the most common web application vulnerability and a staple of cybersecurity penetration testing. Pen testers report XSS findings in almost every web app engagement. Security engineers implement Content Security Policy headers and input sanitization to prevent XSS. Bug bounty programs pay consistently for XSS discoveries.
Which Cybersecurity Roles Use Cross-Site Scripting?
Related Cybersecurity Terms
Related Cybersecurity Certifications
Looking for the acronym? Read about XSS in the acronyms collection
Citation index · auto-derived from course content
Where Cross-Site Scripting is used across DecipherU
11 public surfaces on the platform reference this term in a meaningful way. Sorted by relevance.
Courses · 1
Lessons that teach this term as part of a structured curriculum.
Related glossary entries · 10
Other glossary terms whose definition cites this one.
"…hem as display text rather than executable code, preventing cross-site scripting attacks."
"…les, images, frames) are permitted on a page. CSP mitigates cross-site scripting by preventing the browser from executing inline scripts or…"
"…ters test for command injection alongside SQL injection and XSS. Security engineers prevent it by avoiding shell calls and…"
"…authenticates a user. Attackers obtain session IDs through XSS, network sniffing, or brute force. Once they have a valid t…"
"…Fs protect against web-specific attacks like SQL injection, cross-site scripting, and request forgery. They operate at Layer 7 and can be de…"
"…E categorizes the underlying flaw patterns (like CWE-79 for cross-site scripting or CWE-89 for SQL injection). It helps developers and secur…"
"…skills. It covers authentication flaws, injection attacks, cross-site scripting, session management, AJAX security, and web services testin…"
"…ten operate as reverse proxies, filtering SQL injection and XSS attacks. Security architects design reverse proxy layers fo…"
"…ak input validation is the root cause of injection attacks, cross-site scripting, and buffer overflows. Penetration testers probe input fiel…"
"…m input to database query to output, identifying injection, XSS, and other flaws with low false positive rates. IAST works…"
A web vulnerability that lets attackers inject malicious JavaScript into pages viewed by other users. Stored XSS persists in the database. Reflected XSS bounces off the server in a URL parameter. DOM-based XSS manipulates the page's client-side code. All three steal session tokens, redirect users, or deface pages.
XSS is the most common web application vulnerability and a staple of cybersecurity penetration testing. Pen testers report XSS findings in almost every web app engagement. Security engineers implement Content Security Policy headers and input sanitization to prevent XSS. Bug bounty programs pay consistently for XSS discoveries.
Cybersecurity professionals who work with Cross-Site Scripting include Penetration Tester, Security Engineer, Security Architect. These roles apply Cross-Site Scripting knowledge within the Offensive Security domain.
Sources
Definitions are original explanations written for career development purposes. For authoritative technical definitions, refer to NIST, ISO, or the relevant standards body.
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