# Hackers Backdoor Nextcloud Servers via Critical Flaw in Collabora CODE App

Attackers are exploiting a critical vulnerability in Collabora's built-in CODE app to plant backdoors in Nextcloud servers, according to The Hacker News. Nextcloud is widely used by businesses, governments, and universities to host private file-sharing and collaboration services, so a flaw in a bundled component can expose large numbers of organizations at once. Administrators are urged to patch or disable the affected app and check their servers for signs of compromise.

**Importance:** 4/5

## Sources

### Security
- [The Hacker News](https://thehackernews.com/2026/10/hackers-backdoor-nextcloud-servers.html) — Wed, 14 Oct 2026 23:08:31 +0530