cve/2021/CVE-2021-24000.md

### [CVE-2021-24000](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-24000)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2088%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=requestPointerLock()%20could%20be%20applied%20to%20a%20tab%20different%20from%20the%20visible%20tab&color=brighgreen)

### Description

A race condition with requestPointerLock() and setTimeout() could have resulted in a user interacting with one tab when they believed they were on a separate tab. In conjunction with certain elements (such as &lt;input type="file"&gt;) this could have led to an attack where a user was confused about the origin of the webpage and potentially disclosed information they did not intend to. This vulnerability affects Firefox < 88.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1694698

#### Github
No PoCs found on GitHub currently.