Cross-Site Scripting (XSS)

Cross-site scripting (XSS) is a web application vulnerability in which an attacker injects malicious JavaScript (or other client-side script) into a web page that is then executed in the browsers of other users who visit that page.

Vulnerability ManagementVSDVulnerabilityIntermediateCONFIDENTIAL2,192 words9 min readApr 7, 2026

Last updated Apr 11, 2026

CLASSIFICATION: CONFIDENTIAL

This article requires CONFIDENTIAL clearance or higher.

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Also at this clearance level

Threat IntelligenceTIDThreatIntermediate

Table of Contents

Cross-Site Scripting (XSS)

What you need

Also at this clearance level

APT28 (Fancy Bear / Forest Blizzard)

Lazarus Group (HIDDEN COBRA / Diamond Sleet)

Salt Typhoon

Single Sign-On (SSO) Architecture

The Academy

The Command Post

The Armory