Total vulnerabilities in the database
Nextcloud Server is a Nextcloud package that handles data storage. A vulnerability in federated share exists in versions prior to 19.0.11, 20.0.10, and 21.0.2. An attacker can gain access to basic information about users of a server by accessing a public link that a legitimate server user added as a federated share. This happens because Nextcloud supports sharing registered users with other Nextcloud servers, which can be done automatically when selecting the "Add server automatically once a federated share was created successfully" setting. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2 As a workaround, disable "Add server automatically once a federated share was created successfully" in the Nextcloud settings.
| Software | From | Fixed in |
|---|---|---|
| nextcloud / nextcloud_server | - | 19.0.11 |
| nextcloud / nextcloud_server | 20.0.0 | 20.0.10 |
| nextcloud / nextcloud_server | 21.0.0 | 21.0.2 |