cve/2019/CVE-2019-20056.md

### [CVE-2019-20056](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20056)
![](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

stb_image.h (aka the stb image loader) 2.23, as used in libsixel and other products, has an assertion failure in stbi__shiftsigned.

### POC

#### Reference
- https://github.com/saitoha/libsixel/issues/126

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