cve/2023/CVE-2023-38700.md

### [CVE-2023-38700](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-38700)
![](https://img.shields.io/static/v1?label=Product&message=matrix-appservice-irc&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3C%201.0.1%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-200%3A%20Exposure%20of%20Sensitive%20Information%20to%20an%20Unauthorized%20Actor&color=brighgreen)

### Description

matrix-appservice-irc is a Node.js IRC bridge for Matrix. Prior to version 1.0.1, it was possible to craft an event such that it would leak part of a targeted message event from another bridged room. This required knowing an event ID to target. Version 1.0.1n fixes this issue. As a workaround, set the `matrixHandler.eventCacheSize` config value to `0`. This workaround may impact performance.

### POC

#### Reference
No PoCs from references.

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