Security
Hackers Backdoor Nextcloud Servers Through Critical Flaw in Collabora’s Built-in CODE App
The Hacker News·October 14, 2026·1 min read
Hackers exploited a flaw in the Collabora Online - Built-in CODE Server app, an optional Nextcloud component, to plant web shells on Nextcloud servers. Three administrators reported the issue on GitHub, with the first logged attack on September 10. Web shells execute commands with web server rights, allowing attackers to control affected servers remotely.
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