### [CVE-2016-5259](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5259)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

Use-after-free vulnerability in the CanonicalizeXPCOMParticipant function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via a script that closes its own Service Worker within a nested sync event loop.

### POC

#### Reference
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html

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