### [CVE-2021-1748](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1748)
![](https://img.shields.io/static/v1?label=Product&message=iOS%20and%20iPadOS&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=tvOS&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=watchOS&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Processing%20a%20maliciously%20crafted%20URL%20may%20lead%20to%20arbitrary%20javascript%20code%20execution&color=brightgreen)

### Description

A validation issue was addressed with improved input sanitization. This issue is fixed in tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4. Processing a maliciously crafted URL may lead to arbitrary javascript code execution.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ChiChou/mistune-patch-backport
- https://github.com/Ivanhoe76zzzz/itmsBlock
- https://github.com/k0mi-tg/CVE-POC
- https://github.com/manas3c/CVE-POC
- https://github.com/n0-traces/cve_monitor
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/whoforget/CVE-POC
- https://github.com/youwizard/CVE-POC