### [CVE-2022-40959](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-40959)
![](https://img.shields.io/static/v1?label=Product&message=Firefox%20ESR&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Thunderbird&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%20102.3%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%20105%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Bypassing%20FeaturePolicy%20restrictions%20on%20transient%20pages&color=brighgreen)

### Description

During iframe navigation, certain pages did not have their FeaturePolicy fully initialized leading to a bypass that leaked device permissions into untrusted subdocuments. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1782211

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