### [CVE-2019-11746](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11746)
![](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%2060.9%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2068.1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2069%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Use-after-free%20while%20manipulating%20video&color=brighgreen)

### Description

A use-after-free vulnerability can occur while manipulating video elements if the body is freed while still in use. This results in a potentially exploitable crash. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.

### POC

#### Reference
- https://www.mozilla.org/security/advisories/mfsa2019-29/
- https://www.mozilla.org/security/advisories/mfsa2019-29/

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