Difference Between Stored Cross Site Scripting and Reflected Cross Site Scripting

In today’s online world, keeping web applications secure is crucial to protect both businesses and their users. One common threat is Cross-Site Scripting (XSS), where attackers insert harmful code into websites or web applications. This can cause to serious issues like stealing passwords, redirecting users to dangerous sites, and changing web content. Understanding XSS and its effects helps to keep our website safe from this threats.

What is Stored Cross-Site Scripting (XSS)?

Stored XSS happens when an attacker injects harmful code directly into a website’s database or server. This code is then saved and shown to other users when they visit the affected page.

Attack Examples

1. Forum Post: An attacker posts a comment with harmful code on a forum. When other users read the comment, the code runs in their browsers.
2. User Profiles: An attacker adds harmful scripts to a user’s profile. When other users view the profile, the scripts run.
3. Message Boards: An attacker inserts scripts into message board posts. When other users read these posts, the scripts execute.

What is Reflected XSS?

Reflected XSS occurs when an attacker tricks a user into clicking a link with harmful code. This code is not saved on the server; it only affects users who interact with the malicious link.

Attack Examples

1. Phishing Emails: An attacker sends an email with a link containing harmful code. When the recipient clicks the link, the code runs in their browser.
2. Search Queries: An attacker adds harmful code to a search query. When users view the search results, the code executes.
3. Malicious URLs: An attacker creates URLs with harmful scripts. When users click these links, the scripts run.

Difference Between Stored and Reflected XSS

Conclusion

Cross-Site Scripting is a serious security threat that can compromise both user data and the security of web applications. Knowing the differences between Stored and Reflected XSS and how they can affect users helps you better protect your website.