cve/2023/CVE-2023-37463.md

### [CVE-2023-37463](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-37463)
![](https://img.shields.io/static/v1?label=Product&message=cmark-gfm&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3C%200.29.0.gfm.12%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-400%3A%20Uncontrolled%20Resource%20Consumption&color=brighgreen)

### Description

cmark-gfm is an extended version of the C reference implementation of CommonMark, a rationalized version of Markdown syntax with a spec. Three polynomial time complexity issues in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. These vulnerabilities have been patched in 0.29.0.gfm.12.

### POC

#### Reference
- https://github.com/github/cmark-gfm/security/advisories/GHSA-w4qg-3vf7-m9x5

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds