cve/2019/CVE-2019-11636.md

### [CVE-2019-11636](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11636)
![](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

Zcash 2.x allows an inexpensive approach to "fill all transactions of all blocks" and "prevent any real transaction from occurring" via a "Sapling Wood-Chipper" attack.

### POC

#### Reference
- https://github.com/zcash/zcash/issues/3955
- https://saplingwoodchipper.github.io

#### Github
- https://github.com/saplingwoodchipper/saplingwoodchipper.github.io