# PostMessage-Sicherheitsanfälligkeiten ## PostMessage-Sicherheitsanfälligkeiten {{#include ../../banners/hacktricks-training.md}} ## Sende **PostMessage** **PostMessage** verwendet die folgende Funktion, um eine Nachricht zu senden: ```bash targetWindow.postMessage(message, targetOrigin, [transfer]); # postMessage to current page window.postMessage('{"__proto__":{"isAdmin":True}}', '*') # postMessage to an iframe with id "idframe" document.getElementById('idframe').contentWindow.postMessage('{"__proto__":{"isAdmin":True}}', '*') # postMessage to an iframe via onload ``` Für **weitere Informationen**: - Link zur Seite über [**Prototype Pollution**](../deserialization/nodejs-proto-prototype-pollution/) - Link zur Seite über [**XSS**](../xss-cross-site-scripting/) - Link zur Seite über [**Client Side Prototype Pollution zu XSS**](../deserialization/nodejs-proto-prototype-pollution/index.html#client-side-prototype-pollution-to-xss) ## Referenzen - [https://jlajara.gitlab.io/web/2020/07/17/Dom_XSS_PostMessage_2.html](https://jlajara.gitlab.io/web/2020/07/17/Dom_XSS_PostMessage_2.html) - [https://dev.to/karanbamal/how-to-spot-and-exploit-postmessage-vulnerablities-36cd](https://dev.to/karanbamal/how-to-spot-and-exploit-postmessage-vulnerablities-36cd) - Zum Üben: [https://github.com/yavolo/eventlistener-xss-recon](https://github.com/yavolo/eventlistener-xss-recon) {{#include ../../banners/hacktricks-training.md}}