### [CVE-2020-26176](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26176)
![](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

An issue was discovered in tangro Business Workflow before 1.18.1. No (or broken) access control checks exist on the /api/document/<DocumentID>/attachments API endpoint. Knowing a document ID, an attacker can list all the attachments of a workitem, including their respective IDs. This allows the attacker to gather valid attachment IDs for workitems that do not belong to them.

### POC

#### Reference
- https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/
- https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/

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