cve/2018/CVE-2018-20233.md

### [CVE-2018-20233](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20233)
![](https://img.shields.io/static/v1?label=Product&message=Universal%20Plugin%20Manager&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%202.22.14%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Improper%20Restriction%20of%20XML%20External%20Entity%20Reference%20('XXE')&color=brighgreen)

### Description

The Upload add-on resource in Atlassian Universal Plugin Manager before version 2.22.14 allows remote attackers who have system administrator privileges to read files, make network requests and perform a denial of service attack via an XML External Entity vulnerability in the parsing of atlassian plugin xml files in an uploaded JAR.

### POC

#### Reference
- https://ecosystem.atlassian.net/browse/UPM-5964

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