Description
Cross-site Scripting (XSS) refers to client-side code injection attack wherein an attacker can execute malicious scripts into a legitimate website or web application. XSS occurs when a web application makes use of unvalidated or unencoded user input within the output it generates.
Remediation
Apply context-dependent encoding and/or validation to user input rendered on a page
References
Cross-site Scripting (XSS) Attack - Acunetix
XSS Filter Evasion Cheat Sheet
Excess XSS, a comprehensive tutorial on cross-site scripting
Related Vulnerabilities
WordPress Plugin Youtube Channel Gallery Cross-Site Scripting (2.4)
WordPress Plugin Alpine PhotoTile for Instagram Cross-Site Scripting (1.2.7.7)
WordPress Plugin User Domain Whitelist Multiple Vulnerabilities (1.4)
WordPress Plugin PowerPress Podcasting by Blubrry Cross-Site Scripting (10.0)
WordPress Plugin Tags Cloud Manager Cross-Site Scripting (1.0.0)