cve/2021/CVE-2021-27335.md

### [CVE-2021-27335](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27335)
![](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

KollectApps before 4.8.16c is affected by insecure Java deserialization, leading to Remote Code Execution via a ysoserial.payloads.CommonsCollections parameter.

### POC

#### Reference
- https://hacked0x90.net/index.php/2021/02/15/kollectapp-insecure-java-deserialization/

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