In March 2026 a self‑propagating JavaScript worm exploited MediaWiki's user‑script feature to modify common.js files across multiple Wikimedia projects, vandalizing pages, inserting malicious redirects, and highlighting the security risks of user‑generated code on collaborative platforms.
This article explains how to combine reflected and stored cross‑site scripting attacks with same‑origin policy abuse to turn a low‑severity XSS vulnerability into a high‑severity issue, detailing discovery, exploitation steps, and a JavaScript payload that harvests user data.
This article provides a comprehensive overview of Cross‑Site Scripting (XSS), covering its definition, impact, underlying mechanisms, classification, common injection vectors, defensive strategies, practical Q&A, and a curated list of reference resources for developers and security professionals.
This article provides a comprehensive overview of Cross‑Site Scripting (XSS), explaining its definition, dangers, underlying mechanisms, classification into stored, reflected, and DOM‑based types, common injection vectors, and practical defense strategies, while also addressing common questions and resources for further learning.
This comprehensive tutorial explains what XSS is, describes the three main attack types, illustrates how malicious scripts are injected and executed, and provides practical strategies—including encoding, validation, and Content Security Policy—to defend web applications against cross‑site scripting vulnerabilities.
This article explains what Cross‑Site Scripting (XSS) is, distinguishes non‑persistent and persistent attacks with real‑world URL examples, and outlines practical defense strategies such as proper escaping, character‑set handling, and content‑type settings to protect web applications.
