### [CVE-2019-9790](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9790)
![](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%2060.6%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2066%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Use-after-free%20when%20removing%20in-use%20DOM%20elements&color=brighgreen)

### Description

A use-after-free vulnerability can occur when a raw pointer to a DOM element on a page is obtained using JavaScript and the element is then removed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1525145
- https://bugzilla.mozilla.org/show_bug.cgi?id=1525145

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