Description

Stored attacks are those where the injected script is permanently stored on the target servers, such as in a database, in a message forum, visitor log, comment field, etc. The victim then retrieves the malicious script from the server when it requests the stored information. Stored XSS is also sometimes referred to as Persistent or Type-I XSS.

There is Stored XSS vulnerability in Email Blacklist Function https://demo.pimcore.fun/admin/?_dc=1676373439&perspective=

This is due to lack of sanitizaiton when inserting email addresses in the application.

Proof of Concept

<img/src=x onError="${x};alert(xss-yara);"> -@ex_mi

Collaboration note

This issue is a collaborate with Ahmed Hassan

Impact

The attacker can execute arbitrary JavaScript and steal Cookies information and use them to hijack the user's session.