cve/2024/CVE-2024-49761.md

### [CVE-2024-49761](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49761)
![](https://img.shields.io/static/v1?label=Product&message=rexml&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3C%203.3.9%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-1333%3A%20Inefficient%20Regular%20Expression%20Complexity&color=brighgreen)

### Description

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;). This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. The REXML gem 3.3.9 or later include the patch to fix the vulnerability.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/trevor0106/cheatsheet