### [CVE-2016-5771](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5771)
![](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

spl_array.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data.

### POC

#### Reference
- https://bugs.php.net/bug.php?id=72433

#### Github
- https://github.com/syadg123/pigat
- https://github.com/teamssix/pigat