### [CVE-2018-1000874](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000874)
![](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

** DISPUTED ** PHP cebe markdown parser version 1.2.0 and earlier contains a Cross Site Scripting (XSS) vulnerability in all distributed parsers allowing a malicious crafted script to be executed that can result in the lose of user data and sensitive user information. This attack can be exploited by crafting a three backtick wrapped payload with a character in front: L: "```<script>alert();</script>```". NOTE: This has been argued as a non-issue (see references) since it is not the parser's job to sanitize malicious code from a parsed document.

### POC

#### Reference
- https://github.com/cebe/markdown/issues/166
- https://github.com/cebe/markdown/issues/166#issuecomment-508230493

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