---
id: 9121
title: "postMessage targetOrigin bypass via IP normalization"
source_domain: lab.ctbb.show
source_url: "https://lab.ctbb.show/research/postmessage-targetorigin-bypass-via-ip-normalization"
published_at: "2026-07-06T00:00:00Z"
tags: ["red-team", "defense", "security", "edr", "detection-bypass"]
phying_url: "https://phying.com/item/9121"
lang: en
---

# postMessage targetOrigin bypass via IP normalization

## Summary

# postMessage targetOrigin bypass via IP normalization ~/authors/avlidienbrunn - profile avlidienbrunn * * * ­Mathias Karlsson Jul 06, 2026 The second argument to `postMessage` controls which...

## Intelligence Metadata

- **Sources:** lab.ctbb.show
- **Published:** 2026-07-06T00:00:00Z
- **Original:** https://lab.ctbb.show/research/postmessage-targetorigin-bypass-via-ip-normalization
- **Phying News:** https://phying.com/item/9121